diff --git a/pom.xml b/pom.xml
index f532c47..30306b5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
 	<groupId>com.imyeyu.utils</groupId>
 	<artifactId>timi-utils</artifactId>
-	<version>0.0.7</version>
+	<version>0.0.8</version>
 
 	<properties>
 		<maven.test.skip>true</maven.test.skip>
diff --git a/src/main/java/com/imyeyu/utils/Text.java b/src/main/java/com/imyeyu/utils/Text.java
index 8af051e..423ae4f 100644
--- a/src/main/java/com/imyeyu/utils/Text.java
+++ b/src/main/java/com/imyeyu/utils/Text.java
@@ -15,8 +15,16 @@ import java.util.UUID;
  */
 public class Text {
 
+	public static String LETTER_POOL = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+
+	public static String NUMBER_POOL = "0123456789";
+
+	public static String LETTER_NUMBER_POOL = LETTER_POOL + LETTER_POOL;
+
+	public static String PASSWORD_CHAR_POOL = LETTER_NUMBER_POOL + "!#$%&()*+,-./:;<=>?@[]^_`{|}~";
+
 	/** 十六进制小写 */
-	public static char[] HEX_DIGITS_LOWER = "0123456789abcdef".toCharArray();
+	public static char[] HEX_DIGITS_LOWER = (NUMBER_POOL + "abcdef").toCharArray();
 
 	/**
 	 * 是否为半角字符
@@ -150,7 +158,7 @@ public class Text {
 	}
 
 	public static String randomString(int length) {
-		return randomString("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789", length);
+		return randomString(LETTER_NUMBER_POOL, length);
 	}
 
 	public static String randomString(String pool, int length) {