diff --git a/frontend/src/pages/relay/TaskCreatePage.vue b/frontend/src/pages/relay/TaskCreatePage.vue
index 7efbb40..b23ef8c 100644
--- a/frontend/src/pages/relay/TaskCreatePage.vue
+++ b/frontend/src/pages/relay/TaskCreatePage.vue
@@ -257,12 +257,28 @@ async function uploadPendingFiles(tid: number): Promise<number> {
 
 // --- 제출 ---
 const submitting = ref(false)
-const canSubmit = computed(
-  () => !submitting.value && title.value.trim().length > 0 && assignees.value.length > 0,
+// 필드별 인라인 검증 — 제목·담당자 필수. 입력하면 즉시 해제.
+const titleError = ref(false)
+const assigneeError = ref(false)
+watch(title, (v) => {
+  if (v.trim().length > 0) titleError.value = false
+})
+watch(
+  assignees,
+  (v) => {
+    if (v.length > 0) assigneeError.value = false
+  },
+  { deep: true },
 )
+function validateForm(): boolean {
+  titleError.value = title.value.trim().length === 0
+  assigneeError.value = assignees.value.length === 0
+  return !titleError.value && !assigneeError.value
+}
 
 async function submitTask() {
-  if (!canSubmit.value) return
+  if (submitting.value) return
+  if (!validateForm()) return
   submitting.value = true
   try {
     const content = contentText.value
@@ -374,7 +390,7 @@ function goBack() {
           <button
             class="btn primary"
             type="button"
-            :disabled="!canSubmit"
+            :disabled="submitting"
             @click="submitTask"
           >
             <svg
@@ -401,8 +417,15 @@ function goBack() {
           <input
             v-model="title"
             class="title-input"
+            :class="{ 'has-error': titleError }"
             placeholder="업무 제목을 입력하세요"
           >
+          <div
+            v-if="titleError"
+            class="field-error"
+          >
+            업무 제목을 입력해 주세요.
+          </div>
           <div class="divider" />
 
           <!-- 업무 내용 -->
@@ -661,7 +684,10 @@ function goBack() {
               </div>
               <div class="combo">
                 <!-- 입력칸은 고정 — 선택된 담당자는 아래에 표기 -->
-                <div class="combo-field">
+                <div
+                  class="combo-field"
+                  :class="{ 'has-error': assigneeError }"
+                >
                   <input
                     v-model="assigneeQuery"
                     class="combo-input"
@@ -729,6 +755,12 @@ function goBack() {
                   >×</span>
                 </span>
               </div>
+              <div
+                v-if="assigneeError"
+                class="field-error"
+              >
+                담당자를 1명 이상 지정해 주세요.
+              </div>
             </div>
           </div>
 
@@ -949,6 +981,14 @@ function goBack() {
 .title-input::placeholder {
   color: #c4c8cf;
 }
+.title-input.has-error::placeholder {
+  color: var(--red);
+}
+.field-error {
+  font-size: 0.75rem;
+  color: var(--red);
+  margin-top: 0.375rem;
+}
 .divider {
   height: 1px;
   background: var(--border);
@@ -1429,6 +1469,12 @@ function goBack() {
   border-color: var(--accent);
   box-shadow: 0 0 0 3px var(--accent-weak);
 }
+.combo-field.has-error {
+  border-color: var(--red);
+}
+.combo-field.has-error:focus-within {
+  box-shadow: 0 0 0 3px var(--red-weak);
+}
 .combo-caret {
   color: var(--text-3);
   display: grid;