diff --git a/web-ui/js/task-management.js b/web-ui/js/task-management.js
index 88994ab..1aa1b36 100644
--- a/web-ui/js/task-management.js
+++ b/web-ui/js/task-management.js
@@ -103,9 +103,15 @@ function renderWorkTypeTabs() {
     tabsHtml += `
       <button class="tab-btn ${isActive ? 'active' : ''}"
               data-work-type="${workType.id}"
-              onclick="switchWorkType(${workType.id})">
+              onclick="switchWorkType(${workType.id})"
+              style="position: relative; padding-right: 3rem;">
         <span class="tab-icon">🔧</span>
         ${workType.name} (${count})
+        <span onclick="event.stopPropagation(); editWorkType(${workType.id});"
+              style="position: absolute; right: 0.5rem; padding: 0.25rem 0.5rem; opacity: 0.7; cursor: pointer; font-size: 0.75rem;"
+              title="공정 수정">
+          ✏️
+        </span>
       </button>
     `;
   });
@@ -375,3 +381,126 @@ function showToast(message, type = 'info') {
     setTimeout(() => toast.remove(), 300);
   }, 3000);
 }
+
+// ==================== 공정 관리 ====================
+
+let currentEditingWorkType = null;
+
+// 공정 모달 열기 (신규)
+function openWorkTypeModal() {
+  currentEditingWorkType = null;
+  document.getElementById('workTypeModalTitle').textContent = '공정 추가';
+  document.getElementById('workTypeId').value = '';
+  document.getElementById('workTypeName').value = '';
+  document.getElementById('workTypeCategory').value = '';
+  document.getElementById('workTypeDescription').value = '';
+  document.getElementById('deleteWorkTypeBtn').style.display = 'none';
+
+  document.getElementById('workTypeModal').style.display = 'flex';
+  document.body.style.overflow = 'hidden';
+}
+window.openWorkTypeModal = openWorkTypeModal;
+
+// 공정 수정 모달 열기
+async function editWorkType(workTypeId) {
+  try {
+    const workType = workTypes.find(wt => wt.id === workTypeId);
+    if (!workType) {
+      showToast('공정 정보를 찾을 수 없습니다.', 'error');
+      return;
+    }
+
+    currentEditingWorkType = workType;
+    document.getElementById('workTypeModalTitle').textContent = '공정 수정';
+    document.getElementById('workTypeId').value = workType.id;
+    document.getElementById('workTypeName').value = workType.name || '';
+    document.getElementById('workTypeCategory').value = workType.category || '';
+    document.getElementById('workTypeDescription').value = workType.description || '';
+    document.getElementById('deleteWorkTypeBtn').style.display = 'block';
+
+    document.getElementById('workTypeModal').style.display = 'flex';
+    document.body.style.overflow = 'hidden';
+  } catch (error) {
+    console.error('❌ 공정 조회 오류:', error);
+    showToast('공정 정보를 불러올 수 없습니다.', 'error');
+  }
+}
+window.editWorkType = editWorkType;
+
+// 공정 모달 닫기
+function closeWorkTypeModal() {
+  document.getElementById('workTypeModal').style.display = 'none';
+  document.body.style.overflow = 'auto';
+  currentEditingWorkType = null;
+}
+window.closeWorkTypeModal = closeWorkTypeModal;
+
+// 공정 저장
+async function saveWorkType() {
+  const workTypeId = document.getElementById('workTypeId').value;
+  const workTypeData = {
+    name: document.getElementById('workTypeName').value.trim(),
+    category: document.getElementById('workTypeCategory').value.trim() || null,
+    description: document.getElementById('workTypeDescription').value.trim() || null
+  };
+
+  if (!workTypeData.name) {
+    showToast('공정명을 입력해주세요.', 'error');
+    return;
+  }
+
+  try {
+    let response;
+    if (workTypeId) {
+      // 수정
+      response = await window.apiCall(`/daily-work-reports/work-types/${workTypeId}`, 'PUT', workTypeData);
+    } else {
+      // 신규
+      response = await window.apiCall('/daily-work-reports/work-types', 'POST', workTypeData);
+    }
+
+    if (response && response.success) {
+      showToast(workTypeId ? '공정이 수정되었습니다.' : '공정이 추가되었습니다.', 'success');
+      closeWorkTypeModal();
+      await loadAllData();
+    } else {
+      throw new Error(response.message || '저장에 실패했습니다.');
+    }
+  } catch (error) {
+    console.error('❌ 공정 저장 오류:', error);
+    showToast('공정 저장 중 오류가 발생했습니다.', 'error');
+  }
+}
+window.saveWorkType = saveWorkType;
+
+// 공정 삭제
+async function deleteWorkType() {
+  if (!currentEditingWorkType) return;
+
+  // 이 공정에 속한 작업이 있는지 확인
+  const relatedTasks = tasks.filter(t => t.work_type_id === currentEditingWorkType.id);
+  if (relatedTasks.length > 0) {
+    showToast(`이 공정에 ${relatedTasks.length}개의 작업이 연결되어 있어 삭제할 수 없습니다.`, 'error');
+    return;
+  }
+
+  if (!confirm(`"${currentEditingWorkType.name}" 공정을 삭제하시겠습니까?`)) {
+    return;
+  }
+
+  try {
+    const response = await window.apiCall(`/daily-work-reports/work-types/${currentEditingWorkType.id}`, 'DELETE');
+
+    if (response && response.success) {
+      showToast('공정이 삭제되었습니다.', 'success');
+      closeWorkTypeModal();
+      await loadAllData();
+    } else {
+      throw new Error(response.message || '삭제에 실패했습니다.');
+    }
+  } catch (error) {
+    console.error('❌ 공정 삭제 오류:', error);
+    showToast('공정 삭제 중 오류가 발생했습니다.', 'error');
+  }
+}
+window.deleteWorkType = deleteWorkType;
diff --git a/web-ui/pages/admin/tasks.html b/web-ui/pages/admin/tasks.html
index 8bfe771..6a84889 100644
--- a/web-ui/pages/admin/tasks.html
+++ b/web-ui/pages/admin/tasks.html
@@ -77,6 +77,10 @@
             </div>
 
             <div class="page-actions">
+            <button class="btn btn-primary" onclick="openWorkTypeModal()">
+                <span class="btn-icon">🔧</span>
+                공정 추가
+            </button>
             <button class="btn btn-primary" onclick="openTaskModal()">
                 <span class="btn-icon">➕</span>
                 작업 추가
@@ -176,6 +180,48 @@
             </div>
         </div>
     </div>
+
+    <!-- 공정 추가/수정 모달 -->
+    <div id="workTypeModal" class="modal-overlay" style="display: none;">
+        <div class="modal-container">
+            <div class="modal-header">
+                <h2 id="workTypeModalTitle">공정 추가</h2>
+                <button class="modal-close-btn" onclick="closeWorkTypeModal()">×</button>
+            </div>
+
+            <div class="modal-body">
+                <form id="workTypeForm" onsubmit="event.preventDefault(); saveWorkType();">
+                    <input type="hidden" id="workTypeId">
+
+                    <div class="form-group">
+                        <label class="form-label">공정명 *</label>
+                        <input type="text" id="workTypeName" class="form-control" placeholder="예: Base(구조물), Vessel(용기)" required>
+                    </div>
+
+                    <div class="form-group">
+                        <label class="form-label">카테고리</label>
+                        <input type="text" id="workTypeCategory" class="form-control" placeholder="예: 제작, 조립">
+                        <small class="form-help">공정을 그룹화할 카테고리 (선택사항)</small>
+                    </div>
+
+                    <div class="form-group">
+                        <label class="form-label">설명</label>
+                        <textarea id="workTypeDescription" class="form-control" rows="3" placeholder="공정에 대한 설명"></textarea>
+                    </div>
+                </form>
+            </div>
+
+            <div class="modal-footer">
+                <button type="button" class="btn btn-secondary" onclick="closeWorkTypeModal()">취소</button>
+                <button type="button" class="btn btn-danger" id="deleteWorkTypeBtn" onclick="deleteWorkType()" style="display: none;">
+                    🗑️ 삭제
+                </button>
+                <button type="button" class="btn btn-primary" onclick="saveWorkType()">
+                    💾 저장
+                </button>
+            </div>
+        </div>
+    </div>
   </div>
 
     <script type="module" src="/js/load-navbar.js?v=5"></script>