Abstract: Facing the demand of wireless access to massive terminals and access priorities for the different electricity business terminals,it is very important to solve the problem of random access to the electric dedicated long term evolution（LTE）network.LTE random access technology for the electric dedicated LTE system is studied,the access demand of massive equipment is analyzed and LTE random access technology is described.By taking into account the characteristics of business access in the smart grid,the random access algorithm in the dedicated LTE network is studied.Finally,the performance of the proposed algorithm is fairly good according to simulation results and up to requirement of different business access levels.This work is supported by State Grid Corporation of China.