Baby carriage skeleton capable of changing pivoting points in folding

The utility model discloses a baby carriage skeleton capable of changing pivoting points in folding. The skeleton has an unfolding and fixing state and a folding state, and comprises a front leg support, an upper bracket, a rear leg support and a connecting rod frame, wherein the lower end of the upper bracket is pivotally connected with the front leg support through a folding joint set in a locking manner, and the upper end is provided with a holding part used for holding and pushing; the rear leg support is provided with a sliding chute; the upper end of the rear leg support is pivotally connected with the upper bracket; the connecting rod frame is pivotally connected between the front leg support and the rear leg support, and links the front leg support with the rear leg support; the connecting rod frame is provided with a shaft lever pivoted in the sliding chute of the rear leg support; the rear end of the connecting rod frame is connected with a sliding sleeve that can slide to and fro along the rear leg