The invention discloses a pneumatic type vibrating feeding mechanism for an assembling machine of a compressor front cover. The pneumatic type vibrating feeding mechanism for the assembling machine of the compressor front cover comprises an aluminum alloy rack, a front shaft clamping base, a front shaft clamping base bottom plate, a rear shaft clamping base, a rear shaft clamping base bracket, ball bearing component bases and a pneumatic type vibrating stock bin, wherein the ball bearing component bases are respectively arranged at four corners on the lower part of the pneumatic type vibrating stock bin; two ball bearing component bases on the front side are mounted on the front shaft clamping base through pin bolts; the front shaft clamping base is mounted on the front shaft clamping base bottom plate; the front shaft clamping base bottom plate is fixed on the aluminum alloy rack; the two ball bearing component bases on the rear side are mounted on the rear shaft clamping base through the pin bolts; the rear shaft clamping base is fixed on the rear shaft clamping base bracket; the rear shaft clamping base bracket is mounted on the aluminum alloy rack. In such a mode, the pneumatic type vibrating feeding mechanism provided by the invention can be used for replacing the workers for neatly arraying the disordered compressor front covers, uniformly and sequentially conveying the compressor front covers to an appointed position and preparing for independent material separation.