diff --git a/ruoyi-framework/src/main/java/com/ruoyi/framework/config/CaptchaConfig.java b/ruoyi-framework/src/main/java/com/ruoyi/framework/config/CaptchaConfig.java
index f5442eca..b6f80bf2 100644
--- a/ruoyi-framework/src/main/java/com/ruoyi/framework/config/CaptchaConfig.java
+++ b/ruoyi-framework/src/main/java/com/ruoyi/framework/config/CaptchaConfig.java
@@ -5,6 +5,7 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import com.google.code.kaptcha.impl.DefaultKaptcha;
 import com.google.code.kaptcha.util.Config;
+import static com.google.code.kaptcha.Constants.*;
 
 /**
  * 验证码配置
@@ -20,27 +21,23 @@ public class CaptchaConfig
         DefaultKaptcha defaultKaptcha = new DefaultKaptcha();
         Properties properties = new Properties();
         // 是否有边框 默认为true 我们可以自己设置yes，no
-        properties.setProperty("kaptcha.border", "yes");
-        // 边框颜色 默认为Color.BLACK
-        properties.setProperty("kaptcha.border.color", "105,179,90");
+        properties.setProperty(KAPTCHA_BORDER, "yes");
         // 验证码文本字符颜色 默认为Color.BLACK
-        properties.setProperty("kaptcha.textproducer.font.color", "blue");
+        properties.setProperty(KAPTCHA_TEXTPRODUCER_FONT_COLOR, "black");
         // 验证码图片宽度 默认为200
-        properties.setProperty("kaptcha.image.width", "160");
+        properties.setProperty(KAPTCHA_IMAGE_WIDTH, "160");
         // 验证码图片高度 默认为50
-        properties.setProperty("kaptcha.image.height", "60");
+        properties.setProperty(KAPTCHA_IMAGE_HEIGHT, "60");
         // 验证码文本字符大小 默认为40
-        properties.setProperty("kaptcha.textproducer.font.size", "30");
+        properties.setProperty(KAPTCHA_TEXTPRODUCER_FONT_SIZE, "38");
         // KAPTCHA_SESSION_KEY
-        properties.setProperty("kaptcha.session.key", "kaptchaCode");
-        // 验证码文本字符间距 默认为2
-        properties.setProperty("kaptcha.textproducer.char.space", "3");
+        properties.setProperty(KAPTCHA_SESSION_CONFIG_KEY, "kaptchaCode");
         // 验证码文本字符长度 默认为5
-        properties.setProperty("kaptcha.textproducer.char.length", "5");
+        properties.setProperty(KAPTCHA_TEXTPRODUCER_CHAR_LENGTH, "4");
         // 验证码文本字体样式 默认为new Font("Arial", 1, fontSize), new Font("Courier", 1, fontSize)
-        properties.setProperty("kaptcha.textproducer.font.names", "Arial,Courier");
-        // 验证码噪点颜色 默认为Color.BLACK
-        properties.setProperty("kaptcha.noise.color", "white");
+        properties.setProperty(KAPTCHA_TEXTPRODUCER_FONT_NAMES, "Arial,Courier");
+        // 图片样式 水纹com.google.code.kaptcha.impl.WaterRipple 鱼眼com.google.code.kaptcha.impl.FishEyeGimpy 阴影com.google.code.kaptcha.impl.ShadowGimpy
+        properties.setProperty(KAPTCHA_OBSCURIFICATOR_IMPL, "com.google.code.kaptcha.impl.ShadowGimpy");
         Config config = new Config(properties);
         defaultKaptcha.setConfig(config);
         return defaultKaptcha;
@@ -52,33 +49,33 @@ public class CaptchaConfig
         DefaultKaptcha defaultKaptcha = new DefaultKaptcha();
         Properties properties = new Properties();
         // 是否有边框 默认为true 我们可以自己设置yes，no
-        properties.setProperty("kaptcha.border", "yes");
+        properties.setProperty(KAPTCHA_BORDER, "yes");
         // 边框颜色 默认为Color.BLACK
-        properties.setProperty("kaptcha.border.color", "105,179,90");
+        properties.setProperty(KAPTCHA_BORDER_COLOR, "105,179,90");
         // 验证码文本字符颜色 默认为Color.BLACK
-        properties.setProperty("kaptcha.textproducer.font.color", "blue");
+        properties.setProperty(KAPTCHA_TEXTPRODUCER_FONT_COLOR, "blue");
         // 验证码图片宽度 默认为200
-        properties.setProperty("kaptcha.image.width", "160");
+        properties.setProperty(KAPTCHA_IMAGE_WIDTH, "160");
         // 验证码图片高度 默认为50
-        properties.setProperty("kaptcha.image.height", "60");
+        properties.setProperty(KAPTCHA_IMAGE_HEIGHT, "60");
         // 验证码文本字符大小 默认为40
-        properties.setProperty("kaptcha.textproducer.font.size", "35");
+        properties.setProperty(KAPTCHA_TEXTPRODUCER_FONT_SIZE, "35");
         // KAPTCHA_SESSION_KEY
-        properties.setProperty("kaptcha.session.key", "kaptchaCodeMath");
+        properties.setProperty(KAPTCHA_SESSION_CONFIG_KEY, "kaptchaCodeMath");
         // 验证码文本生成器
-        properties.setProperty("kaptcha.textproducer.impl", "com.ruoyi.framework.config.KaptchaTextCreator");
+        properties.setProperty(KAPTCHA_TEXTPRODUCER_IMPL, "com.ruoyi.framework.config.KaptchaTextCreator");
         // 验证码文本字符间距 默认为2
-        properties.setProperty("kaptcha.textproducer.char.space", "3");
+        properties.setProperty(KAPTCHA_TEXTPRODUCER_CHAR_SPACE, "3");
         // 验证码文本字符长度 默认为5
-        properties.setProperty("kaptcha.textproducer.char.length", "6");
+        properties.setProperty(KAPTCHA_TEXTPRODUCER_CHAR_LENGTH, "6");
         // 验证码文本字体样式 默认为new Font("Arial", 1, fontSize), new Font("Courier", 1, fontSize)
-        properties.setProperty("kaptcha.textproducer.font.names", "Arial,Courier");
+        properties.setProperty(KAPTCHA_TEXTPRODUCER_FONT_NAMES, "Arial,Courier");
         // 验证码噪点颜色 默认为Color.BLACK
-        properties.setProperty("kaptcha.noise.color", "white");
+        properties.setProperty(KAPTCHA_NOISE_COLOR, "white");
         // 干扰实现类
-        properties.setProperty("kaptcha.noise.impl", "com.google.code.kaptcha.impl.NoNoise");
+        properties.setProperty(KAPTCHA_NOISE_IMPL, "com.google.code.kaptcha.impl.NoNoise");
         // 图片样式 水纹com.google.code.kaptcha.impl.WaterRipple 鱼眼com.google.code.kaptcha.impl.FishEyeGimpy 阴影com.google.code.kaptcha.impl.ShadowGimpy
-        properties.setProperty("kaptcha.obscurificator.impl", "com.google.code.kaptcha.impl.ShadowGimpy");
+        properties.setProperty(KAPTCHA_OBSCURIFICATOR_IMPL, "com.google.code.kaptcha.impl.ShadowGimpy");
         Config config = new Config(properties);
         defaultKaptcha.setConfig(config);
         return defaultKaptcha;
diff --git a/ruoyi-framework/src/main/java/com/ruoyi/framework/config/KaptchaTextCreator.java b/ruoyi-framework/src/main/java/com/ruoyi/framework/config/KaptchaTextCreator.java
index 1d0a24c6..bd0dabb0 100644
--- a/ruoyi-framework/src/main/java/com/ruoyi/framework/config/KaptchaTextCreator.java
+++ b/ruoyi-framework/src/main/java/com/ruoyi/framework/config/KaptchaTextCreator.java
@@ -1,5 +1,6 @@
 package com.ruoyi.framework.config;
 
+import java.security.SecureRandom;
 import java.util.Random;
 import com.google.code.kaptcha.text.impl.DefaultTextCreator;
 
@@ -16,7 +17,7 @@ public class KaptchaTextCreator extends DefaultTextCreator
     public String getText()
     {
         Integer result = 0;
-        Random random = new Random();
+        Random random = new SecureRandom();
         int x = random.nextInt(10);
         int y = random.nextInt(10);
         StringBuilder suChinese = new StringBuilder();