The invention relates to a quick coupling assembly, which comprises a quick coupling female and a quick coupling male; the quick coupling male comprises a male shell; a male valve core is assembled in a male fluid flow passage of the male shell in a guide moving manner; a pressure relief passage used for communicating the male fluid flow passage with the outside atmosphere is arranged in the male valve core; the pressure relief passage comprises a liquid through hole section and a mounting hole section, wherein the liquid through hole section is connected with the male fluid flow passage, and the mounting hole section is connected with the outside atmosphere; a blocking piece is assembled in the mounting hole section in the guide moving manner; the male valve core is provided with a pressure relief spring used for applying an elastic acting force to the blocking piece so as to enable the blocking piece to block the liquid through hole section; a communicating passage used for communicating the liquid through hole section with the mounting hole section after the blocking piece is separated from the liquid through hole section is arranged on the blocking piece or the male valve core or between the blocking piece and the male valve core. The quick coupling male cannot automatically release pressure in the prior art is solved by the quick coupling assembly disclosed by the invention.