diff --git "a/BOJ/\353\215\261/yerim.py" "b/BOJ/\353\215\261/yerim.py"
new file mode 100644
index 00000000..a0333093
--- /dev/null
+++ "b/BOJ/\353\215\261/yerim.py"
@@ -0,0 +1,49 @@
+"""
+[백준 10866번: 덱 (Silver 4)](https://www.acmicpc.net/problem/10866)
+- 풀이 시간: 10분
+- 접근 방법
+ - 덱 자료형 사용
+ - 문제 그대로 구현
+"""
+
+from collections import deque
+import sys
+input = sys.stdin.readline
+
+deq = deque()
+n = int(input())
+for i in range(n):
+    cmd = input().split()
+    if cmd[0] == 'push_front':
+        deq.appendleft(cmd[1])
+    elif cmd[0] == 'push_back':
+        deq.append(cmd[1])
+    elif cmd[0] == 'pop_front':
+        if not deq:
+            print(-1)
+        else:
+            x = deq.popleft()
+            print(x)
+    elif cmd[0] == 'pop_back':
+        if not deq:
+            print(-1)
+        else:
+            x = deq.pop()
+            print(x)
+    elif cmd[0] == 'size':
+        print(len(deq))
+    elif cmd[0] == 'empty':
+        if not deq:
+            print(1)
+        else:
+            print(0)
+    elif cmd[0] == 'front':
+        if not deq:
+            print(-1)
+        else:
+            print(deq[0])
+    elif cmd[0] == 'back':
+        if not deq:
+            print(-1)
+        else:
+            print(deq[-1])