Tray device and electrical cabinet

The utility model discloses an electrical cabinet and a tray device. The tray device comprises a supporting plate assembly, a mounting frame and a supporting structure, one side of the supporting plate assembly is pivoted to the mounting frame so that the supporting plate assembly can be rotationally folded relative to the mounting frame, a first clamping groove is formed in the bottom of the supporting plate assembly, the supporting structure comprises a supporting piece, the tail end of the supporting piece is pivoted to the mounting frame, and when the supporting plate assembly is unfoldedrelative to the mounting frame, the head end of the supporting piece can be located in the first clamping groove. Through the structure, a platform capable of placing a computer can be provided on theelectrical cabinet, so that the placement of devices such as the computer is facilitated, and the burden of operators is reduced. And the tray device occupies a small space after being folded, so that the installation space o