diff --git a/hentai/cmdline.py b/hentai/cmdline.py
index ab38f22..0a596e3 100644
--- a/hentai/cmdline.py
+++ b/hentai/cmdline.py
@@ -1,8 +1,10 @@
 #coding: utf-8
 import sys
 from optparse import OptionParser
+from itertools import ifilter
 from logger import logger
 
+
 def banner():
     print '''       _   _            _        _
  _ __ | | | | ___ _ __ | |_ __ _(_)
@@ -17,9 +19,10 @@ def cmd_parser():
     parser.add_option('--search', type='string', dest='keyword', action='store', help='keyword searched')
     parser.add_option('--download', dest='is_download', action='store_true', help='download dojinshi or not')
     parser.add_option('--id', type='int', dest='id', action='store', help='dojinshi id of nhentai')
+    parser.add_option('--ids', type='str', dest='ids', action='store', help='dojinshi id set, e.g. 1,2,3')
     parser.add_option('--path', type='string', dest='saved_path', action='store', default='',
-                      help='path which save the dojinshi downloaded')
-    parser.add_option('--threads', type='int', dest='threads', action='store', default=1,
+                      help='path which save the dojinshi')
+    parser.add_option('--threads', '-t', type='int', dest='threads', action='store', default=1,
                       help='thread count of download dojinshi')
     args, _ = parser.parse_args()
 
@@ -29,11 +32,16 @@ def cmd_parser():
         logger.critical('Maximum number of used threads is 10')
         sys.exit()
 
-    if args.is_download and not args.id:
-        logger.critical('Dojinshi id is required for downloading')
+    if args.ids:
+        _ = map(lambda id: id.strip(), args.ids.split(','))
+        args.ids = set(map(int, ifilter(lambda id: id.isdigit(), _)))
+
+    if args.is_download and not args.id and not args.ids:
+        logger.critical('Dojinshi id/ids is required for downloading')
         sys.exit()
 
     if args.keyword:
         logger.critical(u'并没有做这个功能_(:3」∠)_')
+        sys.exit()
 
     return args
diff --git a/hentai/parser.py b/hentai/parser.py
index 428c1f1..f4cf2e5 100644
--- a/hentai/parser.py
+++ b/hentai/parser.py
@@ -5,6 +5,7 @@ from bs4 import BeautifulSoup
 from constant import DETAIL_URL
 from hentai.logger import logger
 
+
 def dojinshi_parser(id):
     logger.debug('Fetching dojinshi information')
     if not isinstance(id, (int, )) or (isinstance(id, (str, )) and not id.isdigit()):
@@ -47,5 +48,9 @@ def dojinshi_parser(id):
     return dojinshi
 
 
+def search_parser(data):
+    pass
+
+
 if __name__ == '__main__':
     print dojinshi_parser(32271)
\ No newline at end of file