Abstract:With the development of information technology, distributed and multi-terminal have become new features of information system, and the demand for cross-domain online data interaction between heterogeneous programs and platforms is increasing day by day. WebService provides a modular API to perform the request task of remote system through network call, which is cross-platform and suitable for the communication and cooperation of business systems in heterogeneous environment. Based on the technical characteristics of WebService, taking the upgrading and optimization of warehouse code scanning and delivery system as an example, this paper expounds the method and process of WebService interface development, which meets the requirements of data interaction between handset and server, not only realizes data sharing between the same platform, but also solves the problem of data interaction and integration between heterogeneous platforms.