The competition situation between electric power，petroleum and natural gas in new energy vehicle and distributed energy system is compared． And empirically studies are carried out based on big data analysis and regression analysis． The obtained conclusions are as follows: Due to the relatively weak infrastructure，it is difficult for natural gas to pose a significant threat to power energy in the short term，but in the long run，natural gas would become a powerful competitor． Oil companies are actively transforming into integrated energy companies，they would bring new competitive pressures to power enterprises． The new energy vehicle industry is constrained in the short term，but it had a good long － term market prospect，which is conducive to promoting the process of replacing oil with electricity． The distributed energy has a limited impact on electric power． For power companies， the following strategies are available: developing the incremental market and turning to integrated energy services．