Objective:To study the personality factor of locomotive drivers of express trains and to provide the basis for the selection of locomotive driver of high-speed train.

The current “New Speed” express train along Guang Shen Line has been observed a good performance of operation.

This paper analyzes such fundamental features as the invisibility and simultaneous production and consumption,as well as high energy-consuming and substitution of express train service.

Based on the quick writing of equation between node voltages, this paper gives a method of achieving simple transferring among the electrodes of related transistors and then quickly writing the equation of transistor circuits.