The atmospheric boundary layer height has important influence on particulate air pollution. A statistical investigation of atmospheric boundary layer height based on a large amount of Lidar data from multiple sites is used to analysis the characteristic in the Jing-Jin-Ji area. The atmospheric boundary layer height retrieved from the Lidar data is compared with the national weather service national centers for environmental prediction global data assimilation system forecast model result. Statistical results show that the atmospheric boundary layer of the Jing-Jin-Ji area has obvious characteristics of diurnal and seasonal variations, and the atmospheric boundary layer height is higher in the daytime than at night, and the peak value of the atmospheric boundary layer height occurs at 14:00. The atmospheric boundary layer height during the summer and autumn is higher than spring and winter, the atmospheric boundary layer height in winter also has a decreasing tendency. In addition, the statistical result of November 2014 based on all Lidar sites of atmospheric boundary layer height shows that the boundary layer height of the Jing-Jin-Ji area is between 300~900 m and higher in the southeast.