The invention provides a switch assembly for a refrigerator and a refrigerator with a switch assembly. The switch assembly comprises a hinge part and an optical coupling switch arranged between a boxbody and a door body; the hinge part comprises a hinge seat fixed on the box body and a hinge shaft fixedly connected with the door body; the optical coupling switch comprises a signal sending and receiving unit, a signal blocking piece and a monitoring circuit; one of the signal sending and receiving unit and the blocking piece is arranged on the hinge base, and the other one of the signal sending and receiving unit and the blocking piece is arranged on the hinge shaft; when the opening angle of the door body is smaller than the preset shielding angle, the blocking piece is located between the signal sending and receiving unit, the signal sending and receiving unit is prevented from sending a signal to the monitoring circuit so as to control the illuminating lamp to be in a closed state;when the opening angle of the door body is not smaller than the preset shielding angle, the blocking piece is located outside the signal sending and receiving unit, the monitoring circuit receives anelectric signal sent by the signal sending and receiving unit so as to control the lighting lamp to be started. According to the switch assembly for the refrigerator, the implementation cost is low, and the induction is more sensitive.