The invention discloses an atomization pressurizing device for pulmonary delivery spray. The problem that manually-applied force is uneven and not prone to being controlled, and consequently the sprayvolume is uneven is solved. According to the technical scheme, the atomization pressurizing device comprises an air cylinder, a connecting tube and a resetting device; the air cylinder is connected with an air pump and comprises a cylinder body and a push rod; the air cylinder is configured to provide the even pressure for a pulmonary delivery spray device through the push rod so as to enable thepulmonary delivery spray device to spray evenly; the two ends of the connecting tube are detachably connected with the air cylinder and the pulmonary delivery spray device correspondingly, the push rod of the air cylinder and a piston rod of the pulmonary delivery spray device stretch out and draw back in the connecting tube in the axis direction of the connecting tube, and a return device pushing the piston rod to an initial position conveniently is arranged on the connecting tube; and the resetting device is connected with the air cylinder, and the resetting device is configured to drive the push rod to be automatically reset to retract into the cylinder body. Through design of the technical key points, the pulmonary delivery spray device is subjected to pressurizing spraying through the air cylinder, and the effects of even force applying and even spraying are achieved.