diff --git a/conf/db_schema.py b/conf/db_schema.py
index 95e345e..704a1bd 100644
--- a/conf/db_schema.py
+++ b/conf/db_schema.py
@@ -1,7 +1,7 @@
 # db_schema.py
 import os
 import yaml
-from sqlalchemy import Table, Column, Date, Integer, String, Float, Text, MetaData, UniqueConstraint, DateTime
+from sqlalchemy import Table, Column, Date, Integer, String, Float, Text, MetaData, UniqueConstraint, DateTime, Time, PrimaryKeyConstraint
 from sqlalchemy.sql import func
 
 BASE_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
@@ -188,3 +188,39 @@ holiday = Table(
     Column('updated_at', DateTime, server_default=func.now(), onupdate=func.now(), comment='수정일시'),
     comment='한국천문연구원 특일정보'
 )
+
+pos_billdata = Table(
+    get_full_table_name('manager_static_pos_billdata'), metadata,
+    Column('sale_date', Date, nullable=False),
+    Column('shop_cd', String(20), nullable=False),
+    Column('pos_no', Integer, nullable=False),
+    Column('bill_no', Integer, nullable=False),
+    Column('product_cd', String(20), nullable=False),
+    Column('division', String(10)),
+    Column('table_no', Integer),
+    Column('order_time', Time),
+    Column('pay_time', Time),
+    Column('barcode', String(20)),
+    Column('product_name', String(100)),
+    Column('qty', Integer),
+    Column('tot_sale_amt', Integer),
+    Column('erp_cd', String(50)),
+    Column('remark', Text),
+    Column('dc_amt', Integer),
+    Column('dc_type', String(50)),
+    Column('dcm_sale_amt', Integer),
+    Column('net_amt', Integer),
+    Column('vat_amt', Integer),
+    PrimaryKeyConstraint('sale_date', 'shop_cd', 'pos_no', 'bill_no', 'product_cd')
+)
+
+pos_shop_name = Table(
+    get_full_table_name('pos_shop_name'), metadata,
+    Column('shop_cd', String(20), primary_key=True, nullable=False),
+    Column('shop_name', String(100), nullable=False),
+    Column('used', Integer, nullable=False, default=1, comment='사용여부 (1=사용, 0=미사용)'),
+    Column('created_at', DateTime, server_default=func.current_timestamp(), comment='등록일시'),
+    Column('updated_at', DateTime, server_default=func.current_timestamp(), onupdate=func.current_timestamp(), comment='수정일시'),
+    mysql_engine='InnoDB',
+    mysql_charset='utf8mb4',
+)
diff --git a/lib/pos_update_bill.py b/lib/pos_update_bill.py
new file mode 100644
index 0000000..d7f0446
--- /dev/null
+++ b/lib/pos_update_bill.py
@@ -0,0 +1,266 @@
+import os
+import sys
+import re
+import time
+import logging
+from datetime import datetime
+import pandas as pd
+import xlrd
+from openpyxl import load_workbook
+from sqlalchemy.dialects.mysql import insert as mysql_insert
+from sqlalchemy.exc import IntegrityError
+from watchdog.observers import Observer
+from watchdog.events import FileSystemEventHandler
+
+# 프로젝트 루트 상위 경로 추가
+sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+from conf import db, db_schema
+from lib.common import load_config
+
+DATA_DIR = os.path.join(os.path.dirname(__file__), '../data')
+FILE_PATTERN = re.compile(r"^영수증별매출상세현황.*\.xls[x]?$")  # xls 또는 xlsx
+
+logging.basicConfig(
+    level=logging.INFO,
+    format='[%(asctime)s] %(levelname)s: %(message)s',
+    datefmt='%Y-%m-%d %H:%M:%S',
+)
+
+def parse_header(filepath):
+    ext = os.path.splitext(filepath)[1].lower()
+    if ext == '.xlsx':
+        from openpyxl import load_workbook
+        wb = load_workbook(filepath, read_only=True, data_only=True)
+        ws = wb.active
+        cell_val = ws['A3'].value
+    elif ext == '.xls':
+        wb = xlrd.open_workbook(filepath)
+        sheet = wb.sheet_by_index(0)
+        cell_val = sheet.cell_value(2, 0)  # 0-based row,col → A3 is row=2, col=0
+    else:
+        raise ValueError(f"지원하지 않는 확장자: {ext}")
+
+    if not cell_val:
+        raise ValueError("A3 셀에 값이 없습니다.")
+
+    date_match = re.search(r'조회일자\s*:\s*([\d\-]+)', cell_val)
+    shop_match = re.search(r'매장선택\s*:\s*\[(.*?)\]\s*(.+)', cell_val)
+
+    if not date_match or not shop_match:
+        raise ValueError("A3 셀에서 날짜 또는 매장 정보 파싱 실패")
+
+    sale_date = date_match.group(1)
+    shop_cd = shop_match.group(1)
+    shop_name = shop_match.group(2).strip()
+
+    return sale_date, shop_cd, shop_name
+
+def check_and_update_shop(shop_cd, shop_name):
+    conn = db.engine.connect()
+    try:
+        result = conn.execute(
+            "SELECT shop_name FROM fg_manager_pos_shop_name WHERE shop_cd = %s",
+            (shop_cd,)
+        ).fetchone()
+
+        if result is None:
+            conn.execute(
+                "INSERT INTO fg_manager_pos_shop_name (shop_cd, shop_name, used) VALUES (%s, %s, 1)",
+                (shop_cd, shop_name)
+            )
+            logging.info(f"매장코드 '{shop_cd}' 신규 등록: '{shop_name}'")
+        else:
+            existing_name = result[0]
+            if existing_name != shop_name:
+                print(f"매장코드 '{shop_cd}' 기존명: '{existing_name}', 새 이름: '{shop_name}'")
+                answer = input("매장명을 새 이름으로 변경하시겠습니까? (y/Enter=예, 그외=아니오): ").strip().lower()
+                if answer in ('', 'y', 'yes'):
+                    conn.execute(
+                        "UPDATE fg_manager_pos_shop_name SET shop_name = %s WHERE shop_cd = %s",
+                        (shop_name, shop_cd)
+                    )
+                    logging.info(f"매장코드 '{shop_cd}' 매장명 변경: '{existing_name}' -> '{shop_name}'")
+                else:
+                    logging.info(f"매장코드 '{shop_cd}' 매장명 변경 거부됨")
+    finally:
+        conn.close()
+
+def load_data(filepath, sale_date, shop_cd):
+    ext = os.path.splitext(filepath)[1].lower()
+    if ext == '.xls':
+        engine = 'xlrd'
+    elif ext == '.xlsx':
+        engine = 'openpyxl'
+    else:
+        raise ValueError(f"지원하지 않는 엑셀 확장자: {ext}")
+
+    df = pd.read_excel(filepath, header=6, engine=engine)
+
+    if '합계' in df.iloc[:, 0].values:
+        df = df[df.iloc[:, 0] != '합계']
+
+    rename_map = {
+        '포스번호': 'pos_no',
+        '영수증번호': 'bill_no',
+        '구분': 'division',
+        '테이블번호': 'table_no',
+        '최초주문': 'order_time',
+        '결제시각': 'pay_time',
+        '상품코드': 'product_cd',
+        '바코드': 'barcode',
+        '상품명': 'product_name',
+        '수량': 'qty',
+        '총매출액': 'tot_sale_amt',
+        'ERP매핑코드': 'erp_cd',
+        '비고': 'remark',
+        '할인액': 'dc_amt',
+        '할인구분': 'dc_type',
+        '실매출액': 'dcm_sale_amt',
+        '가액': 'net_amt',
+        '부가세': 'vat_amt',
+    }
+    df.rename(columns=rename_map, inplace=True)
+
+    df['sale_date'] = pd.to_datetime(sale_date).date()
+    df['shop_cd'] = shop_cd
+
+    int_cols = ['pos_no', 'bill_no', 'table_no', 'qty', 'tot_sale_amt', 'dc_amt', 'dcm_sale_amt', 'net_amt', 'vat_amt']
+    for col in int_cols:
+        if col in df.columns:
+            df[col] = pd.to_numeric(df[col], errors='coerce').fillna(0).astype(int)
+
+    import datetime
+    time_cols = ['order_time', 'pay_time']
+    for col in time_cols:
+        if col in df.columns:
+            def to_time(val):
+                if pd.isna(val):
+                    return None
+                if isinstance(val, datetime.time):
+                    return val
+                if isinstance(val, datetime.datetime):
+                    return val.time()
+                try:
+                    return datetime.datetime.strptime(str(val), '%H:%M:%S').time()
+                except Exception:
+                    return None
+            df[col] = df[col].apply(to_time)
+
+    return df
+
+def insert_data_to_db(engine, table, df):
+    with engine.begin() as conn:
+        for idx, row in df.iterrows():
+            data = row.to_dict()
+            stmt = mysql_insert(table).values(**data)
+            update_cols = {
+                'division': data.get('division'),
+                'table_no': data.get('table_no'),
+                'order_time': data.get('order_time'),
+                'pay_time': data.get('pay_time'),
+                'barcode': data.get('barcode'),
+                'product_name': data.get('product_name'),
+                'qty': data.get('qty'),
+                'tot_sale_amt': data.get('tot_sale_amt'),
+                'erp_cd': data.get('erp_cd'),
+                'remark': data.get('remark'),
+                'dc_amt': data.get('dc_amt'),
+                'dc_type': data.get('dc_type'),
+                'dcm_sale_amt': data.get('dcm_sale_amt'),
+                'net_amt': data.get('net_amt'),
+                'vat_amt': data.get('vat_amt'),
+            }
+            stmt = stmt.on_duplicate_key_update(**update_cols)
+            try:
+                conn.execute(stmt)
+            except Exception as e:
+                logging.error(f"{idx+1}행 DB 입력 실패: {e}")
+    logging.info("DB 저장 완료")
+
+class BillFileHandler(FileSystemEventHandler):
+    def __init__(self):
+        super().__init__()
+        self.processing_files = set()
+
+    def on_created(self, event):
+        if event.is_directory:
+            return
+        filename = os.path.basename(event.src_path)
+        if FILE_PATTERN.match(filename):
+            if filename in self.processing_files:
+                return
+            self.processing_files.add(filename)
+            logging.info(f"새 파일 감지: {filename}")
+            try:
+                time.sleep(3)  # 파일 완전 생성 대기
+                sale_date, shop_cd, shop_name = parse_header(event.src_path)
+                logging.info(f"파일: {filename}, 날짜: {sale_date}, 매장코드: {shop_cd}, 매장명: {shop_name}")
+
+                check_and_update_shop(shop_cd, shop_name)
+
+                df = load_data(event.src_path, sale_date, shop_cd)
+                if df.empty:
+                    logging.warning(f"데이터가 없습니다: {filename}")
+                else:
+                    insert_data_to_db(db.engine, db_schema.pos_billdata, df)
+                    logging.info(f"{filename} 처리 완료")
+
+                os.remove(event.src_path)
+                logging.info(f"파일 삭제 완료: {filename}")
+            except Exception as e:
+                logging.error(f"{filename} 처리 실패: {e}")
+            finally:
+                self.processing_files.discard(filename)
+
+def process_existing_files():
+    files = [f for f in os.listdir(DATA_DIR) if FILE_PATTERN.match(f)]
+    if not files:
+        logging.info("처리할 기존 파일이 없습니다.")
+        return
+    logging.info(f"시작 시 발견된 처리 대상 파일 {len(files)}개")
+    handler = BillFileHandler()
+    for filename in files:
+        filepath = os.path.join(DATA_DIR, filename)
+        if filename in handler.processing_files:
+            continue
+        handler.processing_files.add(filename)
+        logging.info(f"기존 파일 처리 시작: {filename}")
+        try:
+            sale_date, shop_cd, shop_name = parse_header(filepath)
+            logging.info(f"파일: {filename}, 날짜: {sale_date}, 매장코드: {shop_cd}, 매장명: {shop_name}")
+
+            check_and_update_shop(shop_cd, shop_name)
+
+            df = load_data(filepath, sale_date, shop_cd)
+            if df.empty:
+                logging.warning(f"데이터가 없습니다: {filename}")
+            else:
+                insert_data_to_db(db.engine, db_schema.pos_billdata, df)
+                logging.info(f"{filename} 처리 완료")
+
+            os.remove(filepath)
+            logging.info(f"파일 삭제 완료: {filename}")
+        except Exception as e:
+            logging.error(f"{filename} 처리 실패: {e}")
+        finally:
+            handler.processing_files.discard(filename)
+
+def monitor_folder():
+    process_existing_files()  # 최초 실행 시 한번 검사
+
+    event_handler = BillFileHandler()
+    observer = Observer()
+    observer.schedule(event_handler, path=DATA_DIR, recursive=False)
+    observer.start()
+    logging.info(f"폴더 모니터링 시작: {DATA_DIR}")
+    try:
+        while True:
+            time.sleep(1)
+    except KeyboardInterrupt:
+        observer.stop()
+        logging.info("폴더 모니터링 종료 요청됨")
+    observer.join()
+
+
+if __name__ == "__main__":
+    monitor_folder()
diff --git a/requirements.txt b/requirements.txt
index 6b0461a..aed05ad 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,4 +12,5 @@ statsmodels
 scikit-learn
 customtkinter
 tkcalendar
-tabulate
\ No newline at end of file
+tabulate
+watchdog
\ No newline at end of file