diff --git a/modules/ds18b20.CN.md b/modules/ds18b20.CN.md
index 0ad302a3..79c53f54 100644
--- a/modules/ds18b20.CN.md
+++ b/modules/ds18b20.CN.md
@@ -3,13 +3,17 @@
 
 ds18b20 = require("ds18b20")
 
+#释放
+ds18b20 = nil
+package.loaded["ds18b20"]=nil
+
 ##常量
 C, F, K
 
 <a id="ds18b20_setup"></a>
 ##setup()
 ####描述
-设置DS18B20所在的Pin。<br />
+设置DS18B20所在的管脚(pin)。<br />
 
 ####语法
 setup(pin)
@@ -24,6 +28,10 @@ nil
 ```lua
 ds18b20 = require("ds18b20")
 ds18b20.setup(9)
+-- Don't forget release it after use
+ds18b20 = nil
+package.loaded["ds18b20"]=nil
+
 ```
 
 ####参见
@@ -51,6 +59,10 @@ addrs = ds18b20.addrs()
 if (addrs ~= nil) then
   print("Total DS18B20 sensors: "..table.getn(addrs))
 end
+-- Don't forget release it after use
+ds18b20 = nil
+package.loaded["ds18b20"]=nil
+
 ```
 
 ####参见
@@ -94,6 +106,10 @@ print(t.readNumber())
 print(t.readNumber(nil,t.F))
 -- Read as values
 t1, t2 = t.readNumber()
+-- Don't forget release it after use
+t = nil
+package.loaded["ds18b20"]=nil
+
 ```
 ####参见
 **-**   []()
@@ -132,7 +148,9 @@ print(t.read(addrs[2],t.K))
 print(t.read())
 -- Just read as centigrade
 print(t.read(nil,t.C))
-
+-- Don't forget release it after use
+t = nil
+package.loaded["ds18b20"]=nil
 ```
 ####参见
 **-**   []()
diff --git a/modules/ds18b20.EN.md b/modules/ds18b20.EN.md
index a1b72ca5..e7c216ef 100644
--- a/modules/ds18b20.EN.md
+++ b/modules/ds18b20.EN.md
@@ -3,6 +3,10 @@
 
 ds18b20 = require("ds18b20")
 
+## Release
+ds18b20 = nil
+package.loaded["ds18b20"]=nil
+
 ##Constant
 C, F, K
 
@@ -24,6 +28,9 @@ nil
 ```lua
 ds18b20 = require("ds18b20")
 ds18b20.setup(9)
+-- Don't forget release it after use
+ds18b20 = nil
+package.loaded["ds18b20"]=nil
 ```
 
 ####See also
@@ -51,6 +58,9 @@ addrs = ds18b20.addrs()
 if (addrs ~= nil) then
   print("Total DS18B20 sensors: "..table.getn(addrs))
 end
+-- Don't forget release it after use
+ds18b20 = nil
+package.loaded["ds18b20"]=nil
 ```
 
 ####See also
@@ -94,6 +104,9 @@ print(t.readNumber())
 print(t.readNumber(nil,t.F))
 -- Read as values
 t1, t2 = t.readNumber()
+-- Don't forget release it after use
+t = nil
+package.loaded["ds18b20"]=nil
 ```
 ####See also
 **-**   []()
@@ -132,7 +145,9 @@ print(t.read(addrs[2],t.K))
 print(t.read())
 -- Just read as centigrade
 print(t.read(nil,t.C))
-
+-- Don't forget release it after use
+t = nil
+package.loaded["ds18b20"]=nil
 ```
 ####See also
 **-**   []()