The invention discloses an optimization method of a communication network in the technical field of wireless communication. The method comprises the following steps: S1, performing data collection; S2, analyzing all data through background processing software; S3, performing network parameter adjustment according to an analysis result; S4, dynamically adjusting network resource allocation according to telephone traffic. The method, through engineering optimization and operation and maintenance optimization on a network, is beneficial to the enlargement of the network coverage area, reduces the call drop rate, reduces the origination and incoming call failure rate, provides stable switching, reduces unnecessary soft switching, improves the utilization ratio of system resources, enlarges the system capacity, meanwhile is beneficial to the keeping of good network performance index, improves the single station failure removal and performance, reduces pilot frequency pollution, and enlarges the system capacity.