1. A pump-valve integrated machine for a pneumatic lumbar support of an automobile seat, comprising: an air pump, a pump valve connection base, an electromagnetic air valve lower base, a normally open electromagnetic air valve, an electromagnetic air valve upper cover, and a control circuit board, wherein a one-way air outlet structure is situated upon the pump valve connection base, and the one-way air outlet structure on the pump valve connection base is opposite to and in communication with an air outlet hole of the air pump; the electromagnetic air valve lower base is fixed onto the air pump, and a mounting groove is situated upon a bottom of the electromagnetic air valve lower base, and is provided with the pump valve connection base, a ventilation hole is situated upon the electromagnetic air valve lower base opposite to the one-way air outlet structure of the pump valve connection base; the normally open electromagnetic air valve is disposed on the electromagnetic air valve lower base, an air inlet end of the normally open electromagnetic air valve corresponds to the ventilation hole of the electromagnetic air valve lower base; the electromagnetic air valve upper cover is provided above the normally open electromagnetic air valve, and an air outlet connector of the electromagnetic air valve upper cover corresponds to a valve core of the normally open electromagnetic air valve, the normally open electromagnetic air valve is open when it is not powered on, and gas of the air pump is discharged from the air outlet connector through the normally open electromagnetic air valve, and when the normally open electromagnetic air valve is powered on, the gas of the air pump cannot be discharged from the air outlet connector through the normally open electromagnetic air valve; and the control circuit board is configured to control the normally open electromagnetic air valve and the air pump to operate;