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Excessive increase of micro base stations in wireless heterogeneous cellular networks will lead to the reduction of energy efficiency. Therefore, aiming at the problem of green communication in the base station deployment, a low energy base station deployment algorithm based on the best candidate is proposed. First of all, design the best candidate selection strategy to select a set of candidate set base station, and then use the greedy algorithm to select the network energy efficiency can reach the maximum value of the micro base station, the method of limiting the influence of user distribution on the base station deployment. The simulation results show that the proposed method can not only increase the energy efficiency but also increase the total network traffic, and the energy efficiency is increased by 36% when the network capacity is met.