Currently,online monitoring data of power equipment can only been displayed on the computer and fails to get effectively access to mobile terminal. In order to solve the problem, a monitoring platform for distribution network equipment based on 3G/4G has been designed and developed. In the WAMP and Eclipse development environment, JSON has been selected as the transmission format between the client and the server, XML is used for the page design of the client, and php language and java language are used to realize the logic function of server and client respectively. Finally, the test data of transformer winding deformation based on frequency response analysis(FRA) has been introduced. The real machine test has been carried out, according to methods and requirements for software testing.The results show that the monitoring platform client developed in this paper can run on the Android smart phone stably and prove that the design scheme is feasible.