The present invention provides a perforation device for well completion operation. The perforation device comprises a shell and a spray nozzle assembly, one end of the spray nozzle assembly is arranged in the shell, the other end of the spray nozzle assembly extends out of the shell, the spray nozzle assembly comprises a plurality of injection hoses which are sequentially arranged in a sleeved mode and combined spraying heads arranged at the injection ends of the injection hoses, the combined spraying heads comprise a plurality of split blocks connected with the injection hoses in an one-to-one correspondence mode, and the adjacent injection hoses are limited by shear pins arranged between the split blocks; and limiting assemblies are arranged between the adjacent injection hoses, whereinthe limiting assemblies are in limited fit with outer side pipes when inner side pipes extend out to the tail ends of the outer side pipes. The perforation device has the advantages that the reservoiroil discharge area is increased, the structure is simple, and operation is convenient.