The invention discloses a rain-proof switch cabinet, which comprises an upper cover (1), a frame body (10) and a feeding mechanism, wherein the frame body (10) is provided with an opening on the surface for fitting the upper cover (1), the upper cover (1) is covered on the frame body (10), a feeding port (11) is provided on the upper cover (1), an accommodation groove accommodating the feeding mechanism is provided inside the upper cover (1), and the feeding mechanism is installed in the accommodation groove. The invention has ingenious design and enters the catalyst through the feeding mechanism without opening the upper cover, thus ensuring the safety of the technical personnel.