The invention discloses a pit type automobile elevator, and relates to the technical field of automobile detection equipment. The pit type automobile elevator comprises a rack and a lifting plate, wherein the rack comprises two cross rods. One surfaces of the two cross rods are fixedly provided with two first single supporting lugs, and one end faces of the two cross rods are fixedly provided withan oil cylinder supporting plate. First double supporting lugs are fixed on one surface of the oil cylinder supporting plate, and the two first single supporting lugs are rotatably connected with T-shaped connecting rods through first short shafts. Each T-shaped connecting rod comprises a first connecting rod body, and a second connecting rod body is fixed to one surface of each first connectingrod body. One ends of the two first connecting rod bodies are fixedly provided with a first long shaft, and the peripheral side face of the first long shaft is rotatably connected with a first oil cylinder. According to the pit type automobile elevator, a link mechanism is constituted by the rack, L-shaped connecting rods, the T-shaped connecting rods, a crank, a second oil cylinder and the lifting plate, the first oil cylinder provides lifting power, the second oil cylinder can serve as an adjustable connecting rod to incline the lifting plate, an automobile wheel limiting assembly ensures that an automobile can not slide, and the problems that the automobile can not be inclined and no inclining protection is achieved are solved.