In traditional locating fault methods using on high voltage lines, the traveling wave method has drawn attention at home and abroad with better anti-interference and higher ranging accuracy. However, when multiple faults occur on the transmission line, its error will become large because of traveling wave’s overlap. In order to solve this problem, this paper proposes the improved distributed traveling wave fault location method after analyzing the transmission characteristics of traveling wave on transmission line in fluctuation process and conventional method’s limitations. Firstly, this improved method fits the characteristic curve of the traveling wave head using its arriving time which reaches the multiple measurement points. And then, it uses the curve above to solve the specific position of the fault occurs. Finally, the effectiveness of this method is verified by using PSCAD to construct and simulate the 500 kV transmission line model.