Abstract: With the improvement of communication network and the popularization of smart phone, mobile phone has become a major way for farmers to obtain information. However, due to the lack of Internet skills and the constraints of education level, it is often difficult for farmers to get the agricultural information they need. It is necessary to develop a more effective information service system which could link the extension agencies of rubber tree cultivation technology and farmers. WeChat public platform is a platform for operators of public accounts to provide information and services to WeChat users, it provides a new opportunity to realize the innovation of agricultural information service mode. Therefore, we try to build a rubber tree cultivation technology service system based on WeChat public platform. The system includes two main modules of rubber knowledge and technical service, which can achieve the following main functions: inquiry of rubber tree cultivation management knowledge; expert to user one- to- one remote technical service; rubber tree fertilization formula inquiry; and rubber information service. Rubber tree cultivation technology service system builds an efficient and convenient information bridge between experts and agricultural technicians, agricultural technicians and farmers, and farmers and industry, innovates the service modes and channels, and effectively solves the‘last kilometer’problem of scientific and technological information transmission.