The invention belongs to the technical field of machinery, and relates to a baby carriage capable of climbing a stair. The baby carriage solves the technical problems such as the poor practicability of an existing baby carriage. The baby carriage includes a bearing chassis and a carriage frame. The bearing chassis includes a chassis body, the four edge corners of the chassis body are provided withuniversal wheels, and the lower surface of the chassis body is provided with a caterpillar band device. A first driving source capable of driving the caterpillar band device to be lifted in the height direction of the chassis is arranged between the caterpillar band device and the chassis body. The upper surface of the chassis body is further provided with a connecting seat. The bearing chassis further includes an adjusting device capable of keeping the connecting seat horizontal always. The upper surface of the carriage frame is provided with a cradle. The lower surface of the carriage frameis attached to the connecting seat. The four edge corners of the carriage frame are provided with wheels. A positioning mechanism capable of making the wheels and the connecting seat be fixed oppositely is arranged between the wheels and the connecting seat. The baby carriage has the advantages of good practicality and the like.