The utility model relates to a cab fuse box comprising a box body, a rear cover and a fixing support. The box body is connected to the rear cover. The number of the fixing supports is three. The fixing supports are separately arranged on the two sides of the box body. Installing holes are arranged in the fixing supports. The external surface of the box body is provided with a plurality of binding posts. At least six inner connecting pieces are arranged in the box body. Each inner connecting piece comprises an integrated structure including an input terminal and five output terminals. Each output terminal is matched with one binding post. The rear cover is fixedly matched with the box body. The rear cover is provided with an inlet wire opening structure.