The invention discloses a quick valve port grabbing device. The quick valve port grabbing device comprises a grabhook sheet assembly, wherein a tapered sleeve mechanism is arranged at the rear end of the grabhook sheet assembly and can drive the grabhook sheet assembly to close so as to form a grabbing port in an aerosol valve. The quick valve port grabbing device can overcome the shortages in the prior art and has the advantages that the structure is simple, port grabbing sheets can be quickly opened, and the port grabbing effect is good.