Research methods: By studying documentation and taking Datong-Qinhuangdao Heavy-haul railway for example, this paper determines the working scope and rational effective length of the receiving-departure track for heavy load train in technical station. Then, this paper finds out the shortages of existing middle switch setting by the combination of qualitative and quantitative methods, and discusses the setting of middle switch of receiving-departure track in technical station in the aspects of safety, convenience for traffic organization and improving the working efficiency in railway station.