The invention provides a statistical method of power utilization information acquisition terminal online time and an online rate. Through analyzing a captured acquisition terminal communication data packet, the online time and online rate data are acquired. The method possesses an advantage of not depending on an acquisition main station. A problem that acquisition main station data can not be used or can not be acquired under some conditions is solved. Through analyzing the captured acquisition terminal communication data packet, online and offline time of each terminal is acquired, an online terminal number is derived and acquired, and then an online rate curve of the terminals is acquired. The advantage of backtracking an online condition of any terminal at any moment according to need is possessed. Problems that a main station online rate curve is not accurate, curve precision is insufficient and a statistical dimension is insufficient, which are generated because of a program defect, system performance, a system function and other reasons, are solved. And a problem of calculating single terminal online time is solved too.