The invention relates to the technical field of fuel cell systems, in particular to a hybrid fuel cell air subsystem, a vehicle and a control method. The vehicle comprises a fuel cell stack and the air subsystem; the air subsystem comprises an air supply branch, an air conveying branch and an air storage branch; an air inlet of the air supply branch is connected with a fuel cell air compressor; anair outlet of the air supply branch is connected with the air inlet end of the air conveying branch; the air outlet end of the air conveying branch is connected with the fuel cell stack so as to convey air to the fuel cell stack; an outlet of the air storage branch is connected with the air inlet end of the air conveying branch; and an inlet of the air storage branch is connected with an auxiliary air inlet device. An air supply mode that the fuel cell air compressor and the auxiliary air inlet device are mixed is used, so that air requirements of the fuel cell vehicle running in different power modes can be met in actual use; and performance requirements of the fuel cell air compressor are reduced, so that the low-power fuel cell air compressor can be adopted, and the running noise of the whole vehicle is reduced.