The invention belongs to the field of door opening technologies, and in particular relates to a concealed cab door opening structure. The concealed cab door opening structure comprises a fixing beam, an optical axis guide rail, a pulley component and a door plate, wherein the fixing beam is transversely arranged; the optical axis guide rail is transversely fixed on one side of the fixing beam, and parallel to the fixing beam; the pulley component is sleeved on the optical axis guide rail, and can move along the optical axis guide rail; the door plate is vertically arranged under the pulley component, and the upper end of the door plate is connected and fixed with the pulley component. The structure has the advantages of simple structure, convenience for use, good stability during a door moving process, and being not prone to drop.