diff --git a/hutool-captcha/src/main/java/cn/hutool/captcha/generator/MathGenerator.java b/hutool-captcha/src/main/java/cn/hutool/captcha/generator/MathGenerator.java
index 7395b3ee5..69347d9fd 100755
--- a/hutool-captcha/src/main/java/cn/hutool/captcha/generator/MathGenerator.java
+++ b/hutool-captcha/src/main/java/cn/hutool/captcha/generator/MathGenerator.java
@@ -19,35 +19,59 @@ public class MathGenerator implements CodeGenerator {
 	/** 参与计算数字最大长度 */
 	private final int numberLength;
 
+	/** 计算结果是否允许负数 */
+	private final boolean resultHasNegativeNumber;
+
 	/**
 	 * 构造
 	 */
 	public MathGenerator() {
-		this(2);
+		this(2, true);
 	}
 
 	/**
 	 * 构造
 	 *
-	 * @param numberLength 参与计算最大数字位数
+	 * @param resultHasNegativeNumber 结果是否允许负数
 	 */
-	public MathGenerator(int numberLength) {
+	public MathGenerator(boolean resultHasNegativeNumber) {
+		this(2, resultHasNegativeNumber);
+	}
+
+	/**
+	 * 构造
+	 *
+	 * @param numberLength            参与计算最大数字位数
+	 * @param resultHasNegativeNumber 结果是否允许负数
+	 */
+	public MathGenerator(int numberLength, boolean resultHasNegativeNumber) {
 		this.numberLength = numberLength;
+		this.resultHasNegativeNumber = resultHasNegativeNumber;
 	}
 
 	@Override
 	public String generate() {
 		final int limit = getLimit();
-		String number1 = Integer.toString(RandomUtil.randomInt(limit));
-		String number2 = Integer.toString(RandomUtil.randomInt(limit));
+		char operator = RandomUtil.randomChar(operators);
+		int numberInt1 = 0;
+		int numberInt2 = 0;
+		numberInt1 = RandomUtil.randomInt(limit);
+		// 如果禁止了结果有负数，且计算方式正好计算为减法，需要第二个数小于第一个数
+		if (!resultHasNegativeNumber && CharUtil.equals('-',operator,false)) {
+			//如果第一个数为0，第二个数必须为0，随机[0,0)的数字会报错
+			numberInt2 = numberInt1 == 0 ? 0 : RandomUtil.randomInt(0, numberInt1);
+		} else {
+			numberInt2 = RandomUtil.randomInt(limit);
+		}
+		String number1 = Integer.toString(numberInt1);
+		String number2 = Integer.toString(numberInt2);
 		number1 = StrUtil.padAfter(number1, this.numberLength, CharUtil.SPACE);
 		number2 = StrUtil.padAfter(number2, this.numberLength, CharUtil.SPACE);
-
 		return StrUtil.builder()//
-				.append(number1)//
-				.append(RandomUtil.randomChar(operators))//
-				.append(number2)//
-				.append('=').toString();
+			.append(number1)//
+			.append(operator)//
+			.append(number2)//
+			.append('=').toString();
 	}
 
 	@Override
diff --git a/hutool-captcha/src/test/java/cn/hutool/captcha/GeneratorTest.java b/hutool-captcha/src/test/java/cn/hutool/captcha/GeneratorTest.java
index 0e0cfffd8..f30ae93c0 100755
--- a/hutool-captcha/src/test/java/cn/hutool/captcha/GeneratorTest.java
+++ b/hutool-captcha/src/test/java/cn/hutool/captcha/GeneratorTest.java
@@ -1,6 +1,7 @@
 package cn.hutool.captcha;
 
 import cn.hutool.captcha.generator.MathGenerator;
+import cn.hutool.core.math.Calculator;
 import org.junit.jupiter.api.Test;
 
 public class GeneratorTest {
@@ -11,5 +12,13 @@ public class GeneratorTest {
 		for (int i = 0; i < 1000; i++) {
 			mathGenerator.verify(mathGenerator.generate(), "0");
 		}
+
+		final MathGenerator mathGenerator1 = new MathGenerator(false);
+		for (int i = 0; i < 1000; i++) {
+			String generate = mathGenerator1.generate();
+			if( Calculator.conversion(generate) < 0){
+				throw new RuntimeException("No Pass");
+			}
+		}
 	}
 }