The invention relates to the field of processing of automobiles, in particular to a folding loading cart forklift door. The folding loading cart forklift door comprises a cart forklift door body, a sliding channel, a door shaft, a loading platform, a bearing, a rotating shaft, a telescopic hydraulic cylinder, a hydraulic pump and a wire. According to the folding loading cart forklift door disclosed by the invention, the inner space of the cart forklift door body is utilized; a sliding groove is formed in the cart forklift door body; the inner side of the cart forklift door body and a loading plane can be folded to form an inclined angle of 90 degrees; and the loading plane is in up-and-down and movable connection with the sliding groove in the cart forklift door body, so that a certain distance is kept between articles and a compartment, and the loading and the unloading of a loader are facilitated.