The invention discloses a foldable push and pull baby carriage, with the main technological points as follows: the baby carriage comprises a central frame, a left and right slideways on both side of the carriage that tilt upward on the back end, a front plate on which the front wheels are attached is fixed in front of the central frame, a left and a right bracket, each fixed on the corresponding back part of the central frame, and on each of the bracket is fixed one of the back wheels, a handrail, comprising a left prop and a right prop, each slides correspondently in the above mentioned slideways. The props are each provided with a connecting bar, with one side of which hinge jointed with the prop and the other side to the back part of brackets on both sides. A control device is used to control the lock up of the sliding of the props.