Handlebar reversing structure of a baby carriage and baby carriage

The invention discloses a handlebar reversing structure of a baby carriage. A front connecting seat is rotatably connected with a handle connecting seat; the positions where the handle rod can stay comprise a forward position and a reverse position; a through hole is formed in the handle connecting seat; a pin shaft transversely penetrating through the through hole is arranged on the front connecting seat; a sliding column which can slide in the handle connecting seat and can be matched with the hole wall of the through hole to surround the pin shaft is arranged in the handle connecting seat;and after the sliding column slides, a receding groove allowing the pin shaft to relatively move therein is formed between the sliding column and the hole wall of the through hole, and a first drivingpiece capable of driving the sliding column to slide and a first spring capable of pushing the sliding column to slide and reset are further arranged in the handle connecting base. The invention further discloses a baby carri