Frame of parent-child bicycle

The utility model relates to the technical field of bicycles, in particular to a parent-child bicycle frame which comprises a handle and front axle forks arranged on the two sides of a front wheel, the top ends of the front axle forks are connected with a connecting cylinder, the connecting cylinder is of a hollow structure, a fixator is arranged on the outer side of the top end of the connecting cylinder, and a connecting rod is arranged in the middle of the handle. The diameter of the connecting rod is consistent with the diameter of the interior of the connecting cylinder, the lower end of the connecting rod is movably arranged in the connecting cylinder through a fixator, the fixator is arranged on the outer surface of the connecting cylinder, the height of the handle can be adjusted, and when a child sits on the front and steps on the pedal, a parent sits on the back, and the child can sit on the pedal conveniently; however, the riding direction of the bicycle can still be mastered, and the riding safety