To solve the communication problems within the multiple locomotives collaboratively pulling one train in the high slope area, the train manipulation assistant system was presented. By focusing on the analysis of basic needs, functions, design plan and control program were determined. Through the operation of prototype, it was led to the conclusions that the designed system could achieve information exchange between leading and complement locomotive as 2 or 3 locomotives collaboratively pulling the train, and provide the crew with the visualization of digital information for the collaborative manipulation.