The automatic distribution system can realize the monitoring and control of the distribution network

and can improve the reliability of the power supply and reduce the intensity of the operation. Due to difficult operation and maintenance of automatic terminal power distribution dispersed in poor environment

it is difficult to guarantee the online terminal rate and other practical indicators. In this paper

the distribution automation terminal based on embedded SIM（ e SIM） card is proposed for the problem that the SIM card used in power distribution terminal is difficult to adapt to complex environment and can easily cause the terminal fault off-line. This paper introduces the development and evolution process of e SIM and its air signature technology

focuses on the management workflow of e SIM card

and analyzes the advantages of e SIM card based automatic network distribution terminal in reliability and simplified operation management.