Abstract: Taking the design of logistics substation of logistics management system of Fengbao iron and steel plant as example,the paper introduced structure and working principle of the logistics substation in details.It emphatically described features of SoC,location principle of radio frequency card,design of card reader and key technologies of signal demodulation and installation of weighing sensor,and gave software design of the logistics substation. The actual application showed that the logistics substation has characteristics of strong anti-interference,low communication error rate,quick response speed and convenient maintenance.