Subway station air duct combined excavation construction method capable of saving materials and working hours

The invention relates to the technical field of tunneling methods or equipment, and discloses a subway station air duct combined excavation construction method capable of saving materials and working hours. In the subway station air duct combined excavation construction method, a fresh air channel is arranged to be parallel to a connection side wall, bent by 90 degrees and then connected into a station hall, and a pilot tunnel of the fresh air channel is divided into two parts; the shaft pilot tunnel connected with the side wall of the air shaft is excavated according to a traditional method, the station pilot tunnel which cannot be connected with the side wall of the air shaft is excavated from a station hall, the station pilot tunnel can be smoothly converged with the shaft pilot tunnel without high construction precision, and the shaft pilot tunnel is steered and excavated along the shaft pilot tunnel after being excavated to the position below the shaft pilot tunnel. Therefore, the problem that the statio