diff --git a/python/biopro/impl/ext_mem.py b/python/biopro/impl/ext_mem.py
index b1796aa..3d84a37 100644
--- a/python/biopro/impl/ext_mem.py
+++ b/python/biopro/impl/ext_mem.py
@@ -309,8 +309,7 @@ class MultiExtMemSpiInterface(LowLevelHardwareInterface):
                 print("green data: length is not", self._elite_data_len, ": ", elite_data_len)
 
             if (flag_print):
-                print("green data print:", data, device, datetime.now())
-                print()
+                print("green data print:", data, device, datetime.now(), '\n')
 
             # neulive
             # address += len(data) - 11
diff --git a/python/biopro/server/recording.py b/python/biopro/server/recording.py
index c98a87f..0a4617a 100644
--- a/python/biopro/server/recording.py
+++ b/python/biopro/server/recording.py
@@ -363,14 +363,13 @@ class RecordingProcess(Process):
                     if (device == 7):
                         print('self._last_cnt[7]:', self._last_cnt[7], ', last_data_cnt:', last_data_cnt)
                         
-                    print('skip RAM, but data is right, solve data', list(raw_data[i][0:3]),'|', list(raw_data[colum_total-1][0:3]), 'skip Ram', self._skip_ram_cnt, 'times')
+                    print('skip RAM, but data is right, solve data', list(raw_data[i][0:3]),'|', list(raw_data[colum_total-1][0:3]), 'skip Ram', self._skip_ram_cnt, 'times \n')
                     # print('data:')
                     # print('|', list(raw_data[0]))
                     # print('|', list(raw_data[1]))
                     # print('| ... ... ...')
                     # print('| ... ... ...')
                     # print('|', list(raw_data[colum_total-1]))
-                    print()
 
                     if (device == 4):
                         self._last_cnt[4] = last_data_cnt
@@ -533,7 +532,11 @@ class RecordingProcess(Process):
                         list(section[0 : mem_header_len]), 
                         list(section[single_data_len - 3: single_data_len]),
                         'device:', device, ',', datetime.now())
-                    print('header != tailer', list(section), '\n')
+                    if (i-1 >= 0):
+                        print('header != tailer', list(raw_data[i-1]), 'raw:', i-1)
+                    print('header != tailer', list(section), 'raw:', i)
+                    if (i+1 <= index):
+                        print('header != tailer', list(raw_data[i+1]), 'raw:', i+1, '\n')
                 
                 section = section[3:]
                 yield None, section