diff --git a/src/main/java/com/example/solidconnection/auth/dto/EmailSignInRequest.java b/src/main/java/com/example/solidconnection/auth/dto/EmailSignInRequest.java
index 925fb62cd..3987bc508 100644
--- a/src/main/java/com/example/solidconnection/auth/dto/EmailSignInRequest.java
+++ b/src/main/java/com/example/solidconnection/auth/dto/EmailSignInRequest.java
@@ -1,12 +1,16 @@
 package com.example.solidconnection.auth.dto;
 
+import com.example.solidconnection.auth.dto.validation.Password;
+import jakarta.validation.constraints.Email;
 import jakarta.validation.constraints.NotBlank;
 
 public record EmailSignInRequest(
 
         @NotBlank(message = "이메일을 입력해주세요.")
+        @Email(message = "유효한 이메일 주소를 입력해주세요.")
         String email,
 
+        @Password
         @NotBlank(message = "비밀번호를 입력해주세요.")
         String password
 ) {
diff --git a/src/main/java/com/example/solidconnection/auth/dto/EmailSignUpTokenRequest.java b/src/main/java/com/example/solidconnection/auth/dto/EmailSignUpTokenRequest.java
index 52e50e5b2..ffafa222d 100644
--- a/src/main/java/com/example/solidconnection/auth/dto/EmailSignUpTokenRequest.java
+++ b/src/main/java/com/example/solidconnection/auth/dto/EmailSignUpTokenRequest.java
@@ -1,13 +1,16 @@
 package com.example.solidconnection.auth.dto;
 
+import com.example.solidconnection.auth.dto.validation.Password;
 import jakarta.validation.constraints.Email;
 import jakarta.validation.constraints.NotBlank;
 
 public record EmailSignUpTokenRequest(
 
-        @Email(message = "이메일을 입력해주세요.")
+        @NotBlank(message = "이메일을 입력해주세요.")
+        @Email(message = "유효한 이메일 주소를 입력해주세요.")
         String email,
 
+        @Password
         @NotBlank(message = "비밀번호를 입력해주세요.")
         String password
 ) {
diff --git a/src/main/java/com/example/solidconnection/auth/dto/validation/Password.java b/src/main/java/com/example/solidconnection/auth/dto/validation/Password.java
new file mode 100644
index 000000000..a896b5724
--- /dev/null
+++ b/src/main/java/com/example/solidconnection/auth/dto/validation/Password.java
@@ -0,0 +1,20 @@
+package com.example.solidconnection.auth.dto.validation;
+
+import jakarta.validation.Constraint;
+import jakarta.validation.Payload;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target({ElementType.FIELD, ElementType.RECORD_COMPONENT})
+@Retention(RetentionPolicy.RUNTIME)
+@Constraint(validatedBy = PasswordValidator.class)
+public @interface Password {
+
+    String message() default "비밀번호는 영문, 숫자, 특수문자를 포함한 8자리 이상이어야 합니다.";
+
+    Class<?>[] groups() default {};
+
+    Class<? extends Payload>[] payload() default {};
+}
diff --git a/src/main/java/com/example/solidconnection/auth/dto/validation/PasswordValidator.java b/src/main/java/com/example/solidconnection/auth/dto/validation/PasswordValidator.java
new file mode 100644
index 000000000..77f8da213
--- /dev/null
+++ b/src/main/java/com/example/solidconnection/auth/dto/validation/PasswordValidator.java
@@ -0,0 +1,16 @@
+package com.example.solidconnection.auth.dto.validation;
+
+import jakarta.validation.ConstraintValidator;
+import jakarta.validation.ConstraintValidatorContext;
+
+public class PasswordValidator implements ConstraintValidator<Password, String> {
+
+    @Override
+    public boolean isValid(String value, ConstraintValidatorContext context) {
+        if (value == null || value.isBlank()) {
+            return true;
+        }
+
+        return value.matches("^(?=.*[A-Za-z])(?=.*\\d)(?=.*[!@#$%^&*()_+\\-={}\\[\\]|:;\"'<>,.?/`~])\\S{8,}$");
+    }
+}
diff --git a/src/test/java/com/example/solidconnection/auth/dto/validation/PasswordValidatorTest.java b/src/test/java/com/example/solidconnection/auth/dto/validation/PasswordValidatorTest.java
new file mode 100644
index 000000000..8beb4c99e
--- /dev/null
+++ b/src/test/java/com/example/solidconnection/auth/dto/validation/PasswordValidatorTest.java
@@ -0,0 +1,42 @@
+package com.example.solidconnection.auth.dto.validation;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+@DisplayName("비밀번호 유효성 검사 테스트")
+class PasswordValidatorTest {
+
+    private final PasswordValidator validator = new PasswordValidator();
+
+    @Test
+    void 정상_패턴이면_true를_반환한다() {
+        assertThat(validator.isValid("abcd123!", null)).isTrue();
+    }
+
+    @Test
+    void 숫자가_없으면_false를_반환한다() {
+        assertThat(validator.isValid("abcdefg!", null)).isFalse();
+    }
+
+    @Test
+    void 영문자가_없으면_false를_반환한다() {
+        assertThat(validator.isValid("1234567!", null)).isFalse();
+    }
+
+    @Test
+    void 특수문자가_없으면_false를_반환한다() {
+        assertThat(validator.isValid("abcd1234", null)).isFalse();
+    }
+
+    @Test
+    void 공백을_포함하면_false를_반환한다() {
+        assertThat(validator.isValid("abcd123! ", null)).isFalse();
+    }
+
+    @Test
+    void 길이가_8자_미만이면_false를_반환한다() {
+        assertThat(validator.isValid("ab1!ab", null)).isFalse();
+    }
+}