Research conclusions: From the deep research on the research's background，concept and application of the energy saving slope，the design methods for the energy-saving profile are presented.(1)The reasonable slope length and slope of”V" type profile should used for the small interval between stations.(2)The single slope with first relief after steep should be used for the interval between adjacent stations with big gap in elevation.(3)The larger”W" type profile should be used for the large between stations.(4)In the underground engineering，especially for the track design with underground laying method， the profile design can be optimized by using this method to achieve the energy- saving purpose of longitudinal section.