近年来，随着运量的不断增长。我国铁路牵引动力得到了更新，内燃、电力机车逐步取代蒸汽机车，在一些干线已成为主要牵引动力，在多数干线则正处于更新过渡阶段。这就要求我们对行车组织、机务管理、机车运用方式以及乘务人员、检修人员的技术水平有相应的改变和提高。否则新的牵引动力发挥不出其应有的功能，技术更新的投资得不到应有的效益。 In recent years, with the growing volume of traffic. China’s railway traction power has been updated, internal combustion, electric locomotives gradually replace the steam locomotive, in some trunk has become the main traction power, in most of the trunk is in the transitional phase of renewal. This requires that we change and improve the technical level of driving organizations, maintenance management, locomotive application methods as well as crew and maintenance personnel. Otherwise, the new traction power can not give play to its due function, and investment in technological upgrading will not receive due benefits.