Abstract: Atmospheric electric field over ground helps us understand the characteristics of atmospheric in a given area,to provide great help to different weather conditions characteristics of the process analysis of the region. The characteristics of the near-surface atmospheric electric field are analyzed between 2009 and 2015 in Chengdu. Come to the following results: The sunny days,near-surface atmospheric electric field change was basically showing a double peak to valley type. The peaks were at 06:00 and 14:00,the valleys were at 03:00 and 22:00. It showed some seasonal variation. In the overcast days,the average atmospheric electric field showed the trend of positive change and had two obvious peaks,mean values of the electric field were less than the sunny. Atmospheric electric field strength in the fog process is basically positive. The electric field strength was less than the atmospheric electric field at the same time in the sunny days. Under the thunderstorm conditions,the beginning,the development and the end of the near-surface electric field had the obvious surface electric field changes.