[Purpose/significance] Through the analysis of the patent of five Dongguan mobile phone industries, this paper aims at providing information references for the development of Dongguan mobile phone industry. [Method/process] This paper first introduced the basic information of the mobile phone industry in our country, selected Dongguan mobile phone industry patents as the research object, and analyzed overall development trend--the general situation and the trend of applicants, inventors and IPC classification, and the applicant form of IPC classification and IPC classification technical correlation. Finally, it pointed out the open questions, and put forward suggestions. [Result/conclusion] Based on the above analysis, this paper puts forward the following five suggestions for the development of Dongguan mobile phone industry: first, reinforcing the patent situation analysis of the mobile phone industry; second, establishing the mobile phone industry thematic database; third, enhancing the ability of enterprise technology research and development; fourth, supporting key enterprises; fifth, improving the mobile phone industry chain.