diff --git a/apps/as/src/pages/fnrs-cnsltn/lib/fnrs-cnsltn-regist-schema.ts b/apps/as/src/pages/fnrs-cnsltn/lib/fnrs-cnsltn-regist-schema.ts
index 332ef9e14..276fe6e9c 100644
--- a/apps/as/src/pages/fnrs-cnsltn/lib/fnrs-cnsltn-regist-schema.ts
+++ b/apps/as/src/pages/fnrs-cnsltn/lib/fnrs-cnsltn-regist-schema.ts
@@ -10,7 +10,10 @@ export const fnrsCnsltnRegistSchema = z.object({
     cfmtnBgtBizNo: z.string().optional(),
     bgtAplyYr: z.string().optional(),
     dsgnrNm: z.string().min(1, "설계자 이름은 필수입니다"),
-    dsgnrTelno: z.string().min(1, "설계자 전화번호는 필수입니다"),
+    dsgnrTelno: z
+      .string()
+      .min(1, "설계자 전화번호는 필수입니다")
+      .regex(/^[0-9-]+$/, "숫자와 하이픈(-)만 입력 가능합니다"),
     dsgnrOgdpNm: z.string().min(1, "설계자 소속은 필수입니다"),
     dsgnrEmlAddr: z
       .string()
diff --git a/apps/as/src/pages/instl-sncn/lib/instl-sncn-regist-schema.ts b/apps/as/src/pages/instl-sncn/lib/instl-sncn-regist-schema.ts
index 17badc640..ae55e92b9 100644
--- a/apps/as/src/pages/instl-sncn/lib/instl-sncn-regist-schema.ts
+++ b/apps/as/src/pages/instl-sncn/lib/instl-sncn-regist-schema.ts
@@ -9,7 +9,10 @@ export const instlSncnRegistSchema = z.object({
     taskSeComCd: z.array(z.string()).min(1, "구분은 필수입니다"),
     sncnSeComCd: z.string().min(1, "사업구분은 필수입니다"),
     dsgnrNm: z.string().min(1, "설계자 이름은 필수입니다"),
-    dsgnrTelno: z.string().min(1, "설계자 전화번호는 필수입니다"),
+    dsgnrTelno: z
+      .string()
+      .min(1, "설계자 전화번호는 필수입니다")
+      .regex(/^[0-9-]+$/, "숫자와 하이픈(-)만 입력 가능합니다"),
     dsgnrOgdpNm: z.string().min(1, "설계자 소속은 필수입니다"),
     dsgnrEmlAddr: z
       .string()
diff --git a/apps/as/src/widgets/pbadms-sprt/ui/contact-info-form-section.tsx b/apps/as/src/widgets/pbadms-sprt/ui/contact-info-form-section.tsx
index 7787f7a40..1d6e31a16 100644
--- a/apps/as/src/widgets/pbadms-sprt/ui/contact-info-form-section.tsx
+++ b/apps/as/src/widgets/pbadms-sprt/ui/contact-info-form-section.tsx
@@ -70,6 +70,8 @@ function ContactInfoFormSection({ fieldPrefix }: ContactInfoFormSectionProps) {
                       id={field.name}
                       placeholder="설계자 전화번호"
                       aria-invalid={fieldState.invalid}
+                      maxLength={13}
+                      onChange={(e) => field.onChange(e.target.value.replace(/[^0-9-]/g, ""))}
                     />
                     <FieldError errors={[fieldState.error]} />
                   </Field>