Abstract: Accurate time synchronization is increasingly required in all links of energy Internet operation, and the existing absolute time synchronization technology can not meet the synchronization accuracy required by the business in the wireless business scenario due to the number of terminals, mobility, wireless channel quality and other reasons. Thus, this paper proposes a time synchronization technology for wireless time-sensitive power services to meet the demand. This paper analyzes the demand for wireless time synchronization in power grid services and combines mobile edge computing technology and the absolute time synchronization technology based on the wireless physical layer to achieve a more flexible time distribution mechanism and more accurate time synchronization accuracy. At the same time, this paper analyzes the effect of synchronization error on the service flow when the terminal device uses the above technology, and proposes an optimization scheme for using time-shaper at the network edge, effectively reducing the impact of synchronization error on the average service delay. This paper provides a high-precision wireless time synchronization solution for time-sensitive services for the energy Internet.