diff --git a/src/main/java/com/metis/controller/TestController.java b/src/main/java/com/metis/controller/TestController.java
index 53dbd80..657f89f 100644
--- a/src/main/java/com/metis/controller/TestController.java
+++ b/src/main/java/com/metis/controller/TestController.java
@@ -1,17 +1,25 @@
 package com.metis.controller;
 
+import com.metis.flow.domain.bo.BuildApp;
+import com.metis.flow.validator.ValidatorService;
 import com.metis.result.Result;
-import org.springframework.web.bind.annotation.GetMapping;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
 @RestController
 @RequestMapping("/test")
+@RequiredArgsConstructor
 public class TestController {
 
 
-    @GetMapping
-    public Result<String> test() {
+    private final ValidatorService validatorService;
+
+    @PostMapping
+    public Result<String> test(@RequestBody BuildApp app) {
+        validatorService.validate(app);
         return Result.ok("测试成功");
     }
 
diff --git a/src/main/java/com/metis/flow/domain/entity/base/NodeData.java b/src/main/java/com/metis/flow/domain/entity/base/NodeData.java
index 5ae8089..c6add39 100644
--- a/src/main/java/com/metis/flow/domain/entity/base/NodeData.java
+++ b/src/main/java/com/metis/flow/domain/entity/base/NodeData.java
@@ -3,6 +3,7 @@ package com.metis.flow.domain.entity.base;
 import com.alibaba.fastjson2.JSONObject;
 import com.metis.flow.enums.PositionType;
 import jakarta.validation.Valid;
+import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.NotNull;
 import jakarta.validation.constraints.Size;
 import lombok.Data;
@@ -15,6 +16,7 @@ public class NodeData {
     /**
      * 标签
      */
+    @NotBlank(message = "标签不能为空")
     private String label;
 
     /**
diff --git a/src/main/java/com/metis/flow/domain/entity/config/node/DocumentExtractorNodeConfig.java b/src/main/java/com/metis/flow/domain/entity/config/node/DocumentExtractorNodeConfig.java
new file mode 100644
index 0000000..76d1fc4
--- /dev/null
+++ b/src/main/java/com/metis/flow/domain/entity/config/node/DocumentExtractorNodeConfig.java
@@ -0,0 +1,12 @@
+package com.metis.flow.domain.entity.config.node;
+
+import jakarta.validation.constraints.NotBlank;
+import lombok.Data;
+
+@Data
+public class DocumentExtractorNodeConfig {
+
+    @NotBlank(message = "文件类型不能为空")
+    private String fileType;
+
+}
diff --git a/src/main/java/com/metis/flow/domain/entity/config/package-info.java b/src/main/java/com/metis/flow/domain/entity/config/package-info.java
new file mode 100644
index 0000000..a2ccdb1
--- /dev/null
+++ b/src/main/java/com/metis/flow/domain/entity/config/package-info.java
@@ -0,0 +1 @@
+package com.metis.flow.domain.entity.config;
\ No newline at end of file
diff --git a/src/main/java/com/metis/flow/enums/NodeType.java b/src/main/java/com/metis/flow/enums/NodeType.java
index 0c16ad4..dea39f3 100644
--- a/src/main/java/com/metis/flow/enums/NodeType.java
+++ b/src/main/java/com/metis/flow/enums/NodeType.java
@@ -2,6 +2,7 @@ package com.metis.flow.enums;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.metis.flow.domain.entity.config.node.DocumentExtractorNodeConfig;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 
@@ -13,6 +14,7 @@ public enum NodeType {
 
     START(1, "start", "开始", Object.class),
     END(2, "end", "结束", Object.class),
+    DOCUMENT_EXTRACTOR(3, "document-extractor", "文档提取器", DocumentExtractorNodeConfig.class)
 
     ;
 
diff --git a/src/main/java/com/metis/flow/validator/ValidatorCodeService.java b/src/main/java/com/metis/flow/validator/ValidatorCodeService.java
new file mode 100644
index 0000000..9ee3d25
--- /dev/null
+++ b/src/main/java/com/metis/flow/validator/ValidatorCodeService.java
@@ -0,0 +1,65 @@
+package com.metis.flow.validator;
+
+import cn.hutool.core.collection.CollUtil;
+import jakarta.validation.ConstraintViolation;
+import jakarta.validation.Validator;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+import java.util.Set;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class ValidatorCodeService {
+
+    private final Validator globalValidator;
+
+    /**
+     * 验证, 出现校验未通过则抛出异常
+     *
+     * @param validObject 有效对象
+     */
+    public <T> void validateThrow(T validObject) {
+        // validation 编程式校验
+        Set<ConstraintViolation<T>> validates = globalValidator.validate(validObject);
+        if (CollUtil.isNotEmpty(validates)) {
+            List<String> errorMessage = validates.stream()
+                    .map(ConstraintViolation::getMessage).toList();
+            throw new RuntimeException(String.join(",", errorMessage));
+        }
+    }
+
+    /**
+     * 验证错误信息
+     *
+     * @param validObject 有效对象
+     * @return {@link String }
+     */
+    public <T> String validateErrorMsg(T validObject) {
+        // validation 编程式校验
+        Set<ConstraintViolation<T>> validates = globalValidator.validate(validObject);
+        if (CollUtil.isNotEmpty(validates)) {
+            List<String> errorMessage = validates.stream()
+                    .map(ConstraintViolation::getMessage).toList();
+            return String.join(",", errorMessage);
+        }
+        return null;
+    }
+
+
+    /**
+     * 验证
+     *
+     * @param validObject 有效对象
+     * @return boolean
+     */
+    public <T> boolean validate(T validObject) {
+        // validation 编程式校验
+        Set<ConstraintViolation<T>> validates = globalValidator.validate(validObject);
+        return CollUtil.isEmpty(validates);
+    }
+
+}
diff --git a/src/main/java/com/metis/flow/validator/impl/ValidatorServiceImpl.java b/src/main/java/com/metis/flow/validator/impl/ValidatorServiceImpl.java
index f11af15..d6630fe 100644
--- a/src/main/java/com/metis/flow/validator/impl/ValidatorServiceImpl.java
+++ b/src/main/java/com/metis/flow/validator/impl/ValidatorServiceImpl.java
@@ -9,39 +9,28 @@ import com.metis.flow.domain.entity.base.Edge;
 import com.metis.flow.domain.entity.base.Node;
 import com.metis.flow.enums.EdgeType;
 import com.metis.flow.enums.NodeType;
-import com.metis.flow.validator.EdgeValidator;
-import com.metis.flow.validator.NodeValidator;
-import com.metis.flow.validator.ValidatorResult;
-import com.metis.flow.validator.ValidatorService;
+import com.metis.flow.validator.*;
 import com.metis.flow.validator.factory.EdgeValidatorFactory;
 import com.metis.flow.validator.factory.NodeValidatorFactory;
-import jakarta.validation.ConstraintViolation;
-import jakarta.validation.Validator;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Set;
+import java.util.*;
+import java.util.function.Function;
+import java.util.stream.Collectors;
 
 @Slf4j
 @Service
 @RequiredArgsConstructor
 public class ValidatorServiceImpl implements ValidatorService {
 
-    private final Validator globalValidator;
+    private final ValidatorCodeService validatorCodeService;
 
     @Override
     public void validate(BuildApp graph) {
         // validation 编程式校验
-        Set<ConstraintViolation<BuildApp>> validates = globalValidator.validate(graph);
-        if (CollUtil.isNotEmpty(validates)) {
-            List<String> errorMessage = validates.stream()
-                    .map(ConstraintViolation::getMessage).toList();
-            throw new RuntimeException(String.join(",", errorMessage));
-        }
-
+        validatorCodeService.validateThrow(graph);
         Graph model = graph.getGraph();
         // 节点参数校验
         validateNode(model.getNodes());
@@ -78,7 +67,7 @@ public class ValidatorServiceImpl implements ValidatorService {
     /**
      * 验证边缘
      *
-     * @param edges
+     * @param edges 线
      */
     private void validateEdge(List<Edge> edges) {
         List<String> errorMessage = new ArrayList<>();
@@ -105,7 +94,81 @@ public class ValidatorServiceImpl implements ValidatorService {
      * @param edges 边缘
      */
     private void validateRelation(List<Node> nodes, List<Edge> edges) {
+        // 1. 检查线是否连接有效节点
+        validateEdgeConnections(nodes, edges);
 
+        // 2. 检查是否存在环结构
+        validateCycle(nodes, edges);
+
+        // 3. 检查是否存在孤立节点
+        validateIsolatedNodes(nodes, edges);
+    }
+
+    /**
+     * 检查线是否连接有效节点
+     */
+    private void validateEdgeConnections(List<Node> nodes, List<Edge> edges) {
+        Map<String, Node> nodeMap = nodes.stream().collect(Collectors.toMap(Node::getId, Function.identity()));
+        for (Edge edge : edges) {
+            String source = edge.getSource();
+            String target = edge.getTarget();
+            Assert.isTrue(nodeMap.containsKey(source), "边 {} 的源节点 {} 不存在", edge.getLabel(), source);
+            Assert.isTrue(nodeMap.containsKey(target), "边 {} 的目标节点 {} 不存在", edge.getLabel(), target);
+        }
+    }
+
+    /**
+     * 检查是否存在环结构
+     */
+    private void validateCycle(List<Node> nodes, List<Edge> edges) {
+        Map<String, List<String>> adjacencyList = buildAdjacencyList(edges);
+        for (Node node : nodes) {
+            if (hasCycle(node.getId(), adjacencyList, new HashSet<>())) {
+                throw new IllegalArgumentException("图中存在环结构，起始节点: " + node.getData().getLabel());
+            }
+        }
+    }
+
+    /**
+     * 检查是否存在孤立节点
+     */
+    private void validateIsolatedNodes(List<Node> nodes, List<Edge> edges) {
+        Set<String> connectedNodes = new HashSet<>();
+        for (Edge edge : edges) {
+            connectedNodes.add(edge.getSource());
+            connectedNodes.add(edge.getTarget());
+        }
+        for (Node node : nodes) {
+            Assert.isTrue(connectedNodes.contains(node.getId()), "节点 {} 是孤立节点，未与任何边连接", node.getId());
+        }
+    }
+
+    /**
+     * 构建邻接表
+     */
+    private Map<String, List<String>> buildAdjacencyList(List<Edge> edges) {
+        Map<String, List<String>> adjacencyList = new HashMap<>();
+        for (Edge edge : edges) {
+            adjacencyList.computeIfAbsent(edge.getSource(), k -> new ArrayList<>()).add(edge.getTarget());
+        }
+        return adjacencyList;
+    }
+
+    /**
+     * 深度优先搜索（DFS）检查环
+     */
+    private boolean hasCycle(String nodeId, Map<String, List<String>> adjacencyList, Set<String> visited) {
+        if (visited.contains(nodeId)) {
+            return true; // 发现环
+        }
+        visited.add(nodeId);
+        for (String neighbor : adjacencyList.getOrDefault(nodeId, new ArrayList<>())) {
+            if (hasCycle(neighbor, adjacencyList, visited)) {
+                return true;
+            }
+        }
+        visited.remove(nodeId);
+        return false;
     }
 
 }
diff --git a/src/main/java/com/metis/flow/validator/impl/node/DocumentExtractorNodeValidator.java b/src/main/java/com/metis/flow/validator/impl/node/DocumentExtractorNodeValidator.java
new file mode 100644
index 0000000..042d42f
--- /dev/null
+++ b/src/main/java/com/metis/flow/validator/impl/node/DocumentExtractorNodeValidator.java
@@ -0,0 +1,31 @@
+package com.metis.flow.validator.impl.node;
+
+import com.metis.flow.domain.entity.base.Node;
+import com.metis.flow.domain.entity.config.node.DocumentExtractorNodeConfig;
+import com.metis.flow.enums.NodeType;
+import com.metis.flow.validator.NodeValidator;
+import com.metis.flow.validator.ValidatorCodeService;
+import com.metis.flow.validator.ValidatorResult;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class DocumentExtractorNodeValidator implements NodeValidator {
+    private final ValidatorCodeService validatorCodeService;
+
+    @Override
+    public ValidatorResult validate(Node node) {
+        DocumentExtractorNodeConfig config = node.getConfig();
+        validatorCodeService.validateThrow(config);
+        // 业务检查未通过
+        return ValidatorResult.invalid("业务报错");
+    }
+
+    @Override
+    public NodeType getType() {
+        return NodeType.DOCUMENT_EXTRACTOR;
+    }
+}
diff --git a/src/main/java/com/metis/flow/validator/impl/node/EndNodeValidator.java b/src/main/java/com/metis/flow/validator/impl/node/EndNodeValidator.java
index caebef9..5c8eba9 100644
--- a/src/main/java/com/metis/flow/validator/impl/node/EndNodeValidator.java
+++ b/src/main/java/com/metis/flow/validator/impl/node/EndNodeValidator.java
@@ -4,13 +4,17 @@ import com.metis.flow.domain.entity.base.Node;
 import com.metis.flow.enums.NodeType;
 import com.metis.flow.validator.NodeValidator;
 import com.metis.flow.validator.ValidatorResult;
+import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
 @Slf4j
 @Service
+@RequiredArgsConstructor
 public class EndNodeValidator implements NodeValidator {
 
+
+
     @Override
     public ValidatorResult validate(Node node) {
         return ValidatorResult.valid();