diff --git a/be/src/main/java/yeonba/be/login/dto/request/UserValidateUsedPhoneNumberRequest.java b/be/src/main/java/yeonba/be/login/dto/request/UserValidateUsedPhoneNumberRequest.java
new file mode 100644
index 00000000..da0d2535
--- /dev/null
+++ b/be/src/main/java/yeonba/be/login/dto/request/UserValidateUsedPhoneNumberRequest.java
@@ -0,0 +1,24 @@
+package yeonba.be.login.dto.request;
+
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.enums.ParameterIn;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Pattern;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class UserValidateUsedPhoneNumberRequest {
+
+    @Parameter(
+        name = "phoneNumber",
+        description = "전화번호",
+        example = "01011112222",
+        in = ParameterIn.QUERY)
+    @Pattern(
+        regexp = "^010\\d{8}$",
+        message = "전화번호는 11자리 010으로 시작하며 하이픈(-) 없이 0~9의 숫자로 이뤄져야 합니다.")
+    @NotBlank(message = "전화번호는 반드시 입력되어야 합니다.")
+    private String phoneNumber;
+}