diff --git a/backend/src/routes/schedules/index.js b/backend/src/routes/schedules/index.js
index 30276da..f55eb85 100644
--- a/backend/src/routes/schedules/index.js
+++ b/backend/src/routes/schedules/index.js
@@ -121,7 +121,7 @@ export default async function schedulesRoutes(fastify) {
       };
     } else if (s.category_id === 3 && s.x_post_id) {
       result.source = {
-        name: 'X',
+        name: '',
         url: `https://x.com/realfromis_9/status/${s.x_post_id}`,
       };
     }
@@ -247,7 +247,7 @@ async function handleMonthlySchedules(db, year, month) {
       };
     } else if (s.category_id === 3 && s.x_post_id) {
       schedule.source = {
-        name: 'X',
+        name: '',
         url: `https://x.com/realfromis_9/status/${s.x_post_id}`,
       };
     }
diff --git a/backend/src/services/meilisearch/index.js b/backend/src/services/meilisearch/index.js
index 98cdfdf..fd60fd3 100644
--- a/backend/src/services/meilisearch/index.js
+++ b/backend/src/services/meilisearch/index.js
@@ -137,6 +137,16 @@ function formatScheduleResponse(hit) {
     ? hit.member_names.split(',').map(name => name.trim()).filter(Boolean)
     : [];
 
+  // source 객체 구성 (X는 name 비움)
+  let source = null;
+  if (hit.category_id === 2 && hit.source_name) {
+    // YouTube
+    source = { name: hit.source_name, url: null };
+  } else if (hit.category_id === 3) {
+    // X (name 비움)
+    source = { name: '', url: null };
+  }
+
   return {
     id: hit.id,
     title: hit.title,
@@ -146,7 +156,7 @@ function formatScheduleResponse(hit) {
       name: hit.category_name,
       color: hit.category_color,
     },
-    source_name: hit.source_name || null,
+    source,
     members,
     _rankingScore: hit._rankingScore,
   };
diff --git a/frontend/src/pages/mobile/public/Schedule.jsx b/frontend/src/pages/mobile/public/Schedule.jsx
index bf402f1..fc55c09 100644
--- a/frontend/src/pages/mobile/public/Schedule.jsx
+++ b/frontend/src/pages/mobile/public/Schedule.jsx
@@ -275,11 +275,12 @@ function MobileSchedule() {
     const categories = useMemo(() => {
         const categoryMap = new Map();
         schedules.forEach(s => {
-            if (s.category_id && !categoryMap.has(s.category_id)) {
-                categoryMap.set(s.category_id, {
-                    id: s.category_id,
-                    name: s.category_name,
-                    color: s.category_color,
+            const catId = s.category?.id || s.category_id;
+            if (catId && !categoryMap.has(catId)) {
+                categoryMap.set(catId, {
+                    id: catId,
+                    name: s.category?.name || s.category_name,
+                    color: s.category?.color || s.category_color,
                 });
             }
         });
@@ -717,7 +718,7 @@ function MobileSchedule() {
                                     {/* 일정 점 (최대 3개) */}
                                     <div className="flex gap-0.5 mt-1 h-1.5">
                                         {!isSelected(date) && daySchedules.map((schedule, i) => {
-                                            const cat = categories.find(c => c.id === schedule.category_id);
+                                            const cat = categories.find(c => c.id === (schedule.category?.id || schedule.category_id));
                                             const color = cat?.color || '#6b7280';
                                             return (
                                                 <div 
@@ -857,7 +858,7 @@ function MobileSchedule() {
                                             <div className={virtualItem.index < searchResults.length - 1 ? "pb-3" : ""}>
                                                 <ScheduleCard
                                                     schedule={schedule}
-                                                    categoryColor={getCategoryColor(schedule.category_id)}
+                                                    categoryColor={getCategoryColor(schedule.category?.id || schedule.category_id)}
                                                     categories={categories}
                                                     onClick={() => navigate(`/schedule/${schedule.id}`)}
                                                 />
@@ -909,7 +910,7 @@ function MobileSchedule() {
                                 <TimelineScheduleCard
                                     key={schedule.id}
                                     schedule={schedule}
-                                    categoryColor={getCategoryColor(schedule.category_id)}
+                                    categoryColor={getCategoryColor(schedule.category?.id || schedule.category_id)}
                                     categories={categories}
                                     delay={index * 0.05}
                                     onClick={() => navigate(`/schedule/${schedule.id}`)}
@@ -926,7 +927,7 @@ function MobileSchedule() {
 
 // 일정 카드 컴포넌트 (검색용) - 날짜 포함 모던 디자인
 function ScheduleCard({ schedule, categoryColor, categories, delay = 0, onClick }) {
-    const categoryName = categories.find(c => c.id === schedule.category_id)?.name || '미분류';
+    const categoryName = categories.find(c => c.id === (schedule.category?.id || schedule.category_id))?.name || '미분류';
     const memberNames = schedule.member_names || schedule.members?.map(m => m.name).join(',') || '';
     const memberList = memberNames.split(',').filter(name => name.trim());
 
@@ -1036,7 +1037,7 @@ function ScheduleCard({ schedule, categoryColor, categories, delay = 0, onClick
 
 // 타임라인용 일정 카드 컴포넌트 - 모던 디자인
 function TimelineScheduleCard({ schedule, categoryColor, categories, delay = 0, onClick }) {
-    const categoryName = categories.find(c => c.id === schedule.category_id)?.name || '미분류';
+    const categoryName = categories.find(c => c.id === (schedule.category?.id || schedule.category_id))?.name || '미분류';
     const memberNames = schedule.member_names || schedule.members?.map(m => m.name).join(',') || '';
     const memberList = memberNames.split(',').filter(name => name.trim());
 
@@ -1148,7 +1149,7 @@ function CalendarPicker({
             if (!dateMap[date]) {
                 dateMap[date] = [];
             }
-            const category = categories.find(c => c.id === schedule.category_id);
+            const category = categories.find(c => c.id === (schedule.category?.id || schedule.category_id));
             dateMap[date].push(category?.color || '#6b7280');
         });
         return dateMap;
@@ -1330,7 +1331,7 @@ function CalendarPicker({
                             {!isSelected(item.date) && daySchedules.length > 0 && (
                                 <div className="flex gap-0.5 mt-0.5 h-1.5">
                                     {daySchedules.map((schedule, i) => {
-                                        const cat = categories.find(c => c.id === schedule.category_id);
+                                        const cat = categories.find(c => c.id === (schedule.category?.id || schedule.category_id));
                                         const color = cat?.color || '#6b7280';
                                         return (
                                             <div