diff --git a/agents-flex-core/src/main/java/com/agentsflex/core/chain/ChainNode.java b/agents-flex-core/src/main/java/com/agentsflex/core/chain/ChainNode.java
new file mode 100644
index 0000000..2af6b4e
--- /dev/null
+++ b/agents-flex-core/src/main/java/com/agentsflex/core/chain/ChainNode.java
@@ -0,0 +1,205 @@
+/*
+ *  Copyright (c) 2023-2025, Agents-Flex (fuhai999@gmail.com).
+ *  <p>
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *  <p>
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *  <p>
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package com.agentsflex.core.chain;
+
+import com.agentsflex.core.memory.ContextMemory;
+import com.agentsflex.core.memory.DefaultContextMemory;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+public abstract class ChainNode implements Serializable {
+
+    protected String id;
+    protected String name;
+    protected String description;
+
+    protected boolean async = false;
+    protected List<ChainEdge> inwardEdges;
+    protected List<ChainEdge> outwardEdges;
+
+    protected NodeCondition condition;
+
+    protected ContextMemory memory = new DefaultContextMemory();
+    protected ChainNodeStatus nodeStatus = ChainNodeStatus.READY;
+
+    protected ChainNodeValidator validator;
+
+
+    // 循环执行相关属性
+    protected boolean loopEnable = false;           // 是否启用循环执行
+    protected long loopIntervalMs = 1000;            // 循环间隔时间（毫秒）
+    protected NodeCondition loopBreakCondition;      // 跳出循环的条件
+    protected int maxLoopCount = 0;                  // 0 表示不限制循环次数
+
+    // 算力消耗定义，积分消耗
+    protected long computeCost = 0;
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public boolean isAsync() {
+        return async;
+    }
+
+    public void setAsync(boolean async) {
+        this.async = async;
+    }
+
+    public List<ChainEdge> getInwardEdges() {
+        return inwardEdges;
+    }
+
+    public void setInwardEdges(List<ChainEdge> inwardEdges) {
+        this.inwardEdges = inwardEdges;
+    }
+
+    public List<ChainEdge> getOutwardEdges() {
+        return outwardEdges;
+    }
+
+    public void setOutwardEdges(List<ChainEdge> outwardEdges) {
+        this.outwardEdges = outwardEdges;
+    }
+
+    public NodeCondition getCondition() {
+        return condition;
+    }
+
+    public void setCondition(NodeCondition condition) {
+        this.condition = condition;
+    }
+
+    public ContextMemory getMemory() {
+        return memory;
+    }
+
+    public void setMemory(ContextMemory memory) {
+        this.memory = memory;
+    }
+
+    public ChainNodeStatus getNodeStatus() {
+        return nodeStatus;
+    }
+
+    public void setNodeStatus(ChainNodeStatus nodeStatus) {
+        this.nodeStatus = nodeStatus;
+    }
+
+    public void setNodeStatusFinished() {
+        if (this.nodeStatus == ChainNodeStatus.ERROR) {
+            this.setNodeStatus(ChainNodeStatus.FINISHED_ABNORMAL);
+        } else {
+            this.setNodeStatus(ChainNodeStatus.FINISHED_NORMAL);
+        }
+    }
+
+    public ChainNodeValidator getValidator() {
+        return validator;
+    }
+
+    public void setValidator(ChainNodeValidator validator) {
+        this.validator = validator;
+    }
+
+    protected void addOutwardEdge(ChainEdge edge) {
+        if (this.outwardEdges == null) {
+            this.outwardEdges = new ArrayList<>();
+        }
+        this.outwardEdges.add(edge);
+    }
+
+    protected void addInwardEdge(ChainEdge edge) {
+        if (this.inwardEdges == null) {
+            this.inwardEdges = new ArrayList<>();
+        }
+        this.inwardEdges.add(edge);
+    }
+
+    public boolean isLoopEnable() {
+        return loopEnable;
+    }
+
+    public void setLoopEnable(boolean loopEnable) {
+        this.loopEnable = loopEnable;
+    }
+
+    public long getLoopIntervalMs() {
+        return loopIntervalMs;
+    }
+
+    public void setLoopIntervalMs(long loopIntervalMs) {
+        this.loopIntervalMs = loopIntervalMs;
+    }
+
+    public NodeCondition getLoopBreakCondition() {
+        return loopBreakCondition;
+    }
+
+    public void setLoopBreakCondition(NodeCondition loopBreakCondition) {
+        this.loopBreakCondition = loopBreakCondition;
+    }
+
+    public int getMaxLoopCount() {
+        return maxLoopCount;
+    }
+
+    public void setMaxLoopCount(int maxLoopCount) {
+        this.maxLoopCount = maxLoopCount;
+    }
+
+    public List<Parameter> getParameters() {
+        return null;
+    }
+
+    public long getComputeCost() {
+        return computeCost;
+    }
+
+    public void setComputeCost(long computeCost) {
+        this.computeCost = computeCost;
+    }
+
+    public ChainNodeValidResult validate() throws Exception {
+        return validator != null ? validator.validate(this) : ChainNodeValidResult.ok();
+    }
+
+    protected abstract Map<String, Object> execute(Chain chain);
+
+}