Abstract: Based on the phase I project of Nanning Rail Transit Line 5, the joint commissioning scheme of the new typical functions of the TIAS (train integration automatic system) under the application of FAO (fully automatic operation) and smart station technology is studied, and the functions are the linkage of SPKS (staff protection key switch) and ACS (access control system) drawer, and the one key switching station. The common problems and solutions in the process of function verification are analyzed.