Quick coupling and quick coupling assembly

The utility model discloses a quick connector and a quick connector assembly, the quick connector assembly comprises a quick connector, and the quick connector comprises a connector body which is internally provided with a medium channel with two open ends; the valve element is arranged in the medium channel in a sliding mode, a blocking part is arranged on the valve element, and the blocking partcan move to open or close the medium channel along with the valve element; the limiting structure is arranged in the medium channel, a reset piece used for driving the valve element to reset is arranged between the limiting structure and the valve element, the limiting structure can limit the valve element to be disengaged from the connector body, a quick-release part capable of being operated bya user is arranged on the limiting structure, and the limiting structure can be disengaged from the medium channel through the quick-release part. When the quick connector is disassembled, a user operates the quick disassembl