diff --git a/continew-starter-validation/src/main/java/top/continew/starter/validation/constraints/JsonStringValidator.java b/continew-starter-validation/src/main/java/top/continew/starter/validation/constraints/JsonStringValidator.java
index 0e6eb0cf..dee229e4 100644
--- a/continew-starter-validation/src/main/java/top/continew/starter/validation/constraints/JsonStringValidator.java
+++ b/continew-starter-validation/src/main/java/top/continew/starter/validation/constraints/JsonStringValidator.java
@@ -16,6 +16,7 @@
 
 package top.continew.starter.validation.constraints;
 
+import cn.hutool.core.text.CharSequenceUtil;
 import cn.hutool.json.JSONUtil;
 import jakarta.validation.ConstraintValidator;
 import jakarta.validation.ConstraintValidatorContext;
@@ -30,7 +31,7 @@ public class JsonStringValidator implements ConstraintValidator<JsonString, Stri
 
     @Override
     public boolean isValid(String value, ConstraintValidatorContext context) {
-        if (value == null) {
+        if (CharSequenceUtil.isBlank(value)) {
             return true;
         }
         return JSONUtil.isTypeJSON(value);
diff --git a/continew-starter-validation/src/main/java/top/continew/starter/validation/constraints/MobileValidator.java b/continew-starter-validation/src/main/java/top/continew/starter/validation/constraints/MobileValidator.java
index c5c411da..cf2f48cb 100644
--- a/continew-starter-validation/src/main/java/top/continew/starter/validation/constraints/MobileValidator.java
+++ b/continew-starter-validation/src/main/java/top/continew/starter/validation/constraints/MobileValidator.java
@@ -16,6 +16,7 @@
 
 package top.continew.starter.validation.constraints;
 
+import cn.hutool.core.text.CharSequenceUtil;
 import cn.hutool.core.util.PhoneUtil;
 import jakarta.validation.ConstraintValidator;
 import jakarta.validation.ConstraintValidatorContext;
@@ -34,7 +35,7 @@ public class MobileValidator implements ConstraintValidator<Mobile, String> {
 
     @Override
     public boolean isValid(String value, ConstraintValidatorContext context) {
-        if (value == null) {
+        if (CharSequenceUtil.isBlank(value)) {
             return true;
         }
         return PhoneUtil.isMobile(value);
diff --git a/continew-starter-validation/src/main/java/top/continew/starter/validation/constraints/PhoneValidator.java b/continew-starter-validation/src/main/java/top/continew/starter/validation/constraints/PhoneValidator.java
index 5bb6d15b..b541040a 100644
--- a/continew-starter-validation/src/main/java/top/continew/starter/validation/constraints/PhoneValidator.java
+++ b/continew-starter-validation/src/main/java/top/continew/starter/validation/constraints/PhoneValidator.java
@@ -16,6 +16,7 @@
 
 package top.continew.starter.validation.constraints;
 
+import cn.hutool.core.text.CharSequenceUtil;
 import cn.hutool.core.util.PhoneUtil;
 import jakarta.validation.ConstraintValidator;
 import jakarta.validation.ConstraintValidatorContext;
@@ -34,7 +35,7 @@ public class PhoneValidator implements ConstraintValidator<Phone, String> {
 
     @Override
     public boolean isValid(String value, ConstraintValidatorContext context) {
-        if (value == null) {
+        if (CharSequenceUtil.isBlank(value)) {
             return true;
         }
         return PhoneUtil.isPhone(value);