Water tank assembly and refrigerator

The invention provides a water tank assembly and a refrigerator. The water tank assembly comprises a tank body, an upper cover, a pressing piece, a transmission assembly, a first elastic piece and a locking mechanism. The upper cover covers the box body; the pressing piece is connected with the box body; the first end of the transmission assembly is connected with the pressing piece and used for transmitting torque of the pressing piece. One end of the first elastic piece abuts against the upper cover, the other end of the first elastic piece abuts against the box body, and the first elastic piece is used for providing force for the upper cover to be separated from the box body; the locking mechanism is connected with the upper cover, the box body and the transmission assembly. Wherein the pressing piece transmits torque to the transmission assembly in a pressing state, and the locking mechanism relieves the locking state between the upper cover and the box body under the action of the torque of the transmission assembly, so that the upper cover is separated from the box body under the action of the first elastic piece. According to the water tank assembly, the cost of the water tank assembly can be reduced, the structure of the water tank assembly is simplified, and user experience is improved.