diff --git a/history/006_snake/src/main/java/com/gitee/drinkjava2/frog/brain/Organ.java b/history/006_snake/src/main/java/com/gitee/drinkjava2/frog/brain/Organ.java
new file mode 100644
index 0000000..4b4635d
--- /dev/null
+++ b/history/006_snake/src/main/java/com/gitee/drinkjava2/frog/brain/Organ.java
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2018 the original author or authors. 
+ * 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 http://www.apache.org/licenses/LICENSE-2.0 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.gitee.drinkjava2.frog.brain;
+
+import java.awt.Color;
+
+import com.gitee.drinkjava2.frog.Env;
+import com.gitee.drinkjava2.frog.Animal;
+
+/**
+ * Organ is a part of frog, organ can be saved in egg
+ * 
+ * 器官是脑的一部分，多个器官在脑内可以允许重叠出现在同一位置。
+ * 
+ * @author Yong Zhu
+ * @since 1.0.4
+ */
+public class Organ extends Zone {
+	private static final long serialVersionUID = 1L;
+	public String name; // 显示在脑图上的器官名称，可选
+	public long fat = 0; // 如果活跃多，fat值高，则保留（及变异）的可能性大，反之则很可能丢弃掉
+	// public float organWasteEnergy = 0.05f; //
+	// 器官在每个测试循环中需要消耗青蛙多少能量，可以通过调节这个参数抑制器官数量无限增长
+	public float organActiveEnergy = 1; // 输出器官激活需要消耗每个脑细胞多少能量
+	public float organOutputEnergy = 2; // 感觉器官激活会给每个脑细胞增加多少能量
+	public boolean initilized; // 通过这个标记判断是否需要手工给定它的参数初值
+
+	public boolean allowBorrow() { // 是否允许在精子中将这个器官借出
+		return false;
+	}
+
+	/** Only call once when frog created , Child class can override this method */
+	public void initOrgan(Animal a) { // 仅在Animal生成时会调用一次
+	}
+
+	/** Each loop step call active method, Child class can override this method */
+	public void active(Animal a) { // 这是器官级别的方法，每个步长调用一次
+	}
+
+	/** Each loop step call active method, Child class can override this method */
+	public void active(Animal a, Cell c) { // 这是Cell级别的方法，每个步长、每个细胞都要调用一次
+	}
+
+	/** If active in this organ's zone? */
+	public boolean outputActive(Animal a) { // 如果细胞能量>organActiveEnergy,则细胞能量减少，返回true(激活)标志
+		for (Cell cell : a.cells)
+			if (cell.energy > organActiveEnergy && this.nearby(cell.output)) {
+				cell.organ.fat++;
+				cell.energy -= 30;//
+				return true;
+			}
+		return false;
+	}
+
+	/** If active in this organ's zone? */
+	public void activeInput(Animal a, float energy) { // 如果一个细胞输入触突位于这个器官内，则细胞能量增加激活
+		for (Cell cell : a.cells)
+			if (cell.energy < 100)
+				if (this.nearby(cell.input)) {
+					cell.energy += energy;
+					return;
+				}
+	}
+
+	/** Set X, Y, Radius, name of current Organ */
+	public Organ setXYZRHN(float x, float y, float z, float r, float h, String name) {
+		this.setXYZRH(x, y, z, r, h);
+		this.name = name;
+		return this;
+	}
+
+	/** Child class can override this method to drawing picture */
+	public void drawOnBrainPicture(Animal a, BrainPicture pic) {// 把自已这个器官在脑图上显示出来，子类可以重写这个方法
+		if (!Env.SHOW_FIRST_ANIMAL_BRAIN)
+			return;
+		pic.setPicColor(Color.BLACK); // 缺省是黑色
+		pic.drawZone(this);
+		if (this.name != null)
+			pic.drawText(x, y, z, String.valueOf(this.name));
+	}
+
+	/** Only call once after organ be created by new() method */
+	public Organ[] vary() { // 在下蛋时每个器官会调用这个方法，缺省返回一个类似自已的副本，子类通常要覆盖这个方法
+		Organ newOrgan = null;
+		try {
+			newOrgan = this.getClass().newInstance();
+		} catch (Exception e) {
+			throw new UnknownError("Can not make new organ copy for " + this);
+		}
+		copyXYZRH(this, newOrgan);
+		newOrgan.name = this.name;
+		newOrgan.fat = this.fat;
+		return new Organ[] { newOrgan };
+	}
+
+}