The utility model discloses a pit type motor chain hoisting device belongs to stereo?garage technical field, and it includes the steel structural framework of fixed mounting in the pit, vertical slidable mounting has the sweep of carrying in the steel structural framework, the below fixed mounting who carries the sweep has the mounting bracket, the lower surface mounting who carries the sweep has the motor, the power output shaft of motor connects drive?sprocket, lie in on the mounting bracket it advances the one end of car and is equipped with two at least promotion sprockets to carry the sweep non -, be equipped with on the crossbeam at least two with the sprocket that turns to that corresponds is taken turns to the elevator chain, drive?sprocket and promote the sprocket and turn to that the winding has the promotion chain between the sprocket, the both sides of carrying the sweep are equipped with balanced chain respectively. The utility model discloses simple structure operates steadily, has reduced the maintenance, has reduced and has made and use cost, and the wide application is in stereo?garage.