Abstract: A baby seat assembly includes a connecting seat rotatably connected with a supporting seat, which is connected with a seat rod. The supporting seat is rotatably connected with a backrest foldable relative to the seat rod. The supporting seat is further rotatably connected with a front handrail foldable relative to the seat rod. The backrest is provided with a first unlocking component capable of driving a third locking mechanism to unlock after a second locking mechanism is unlocked and when the backrest is rotated and folded relative to the seat rod, and a second unlocking component capable of driving a first locking mechanism to unlock after the third locking mechanism is unlocked and when the front handrail is rotated and folded relative to the seat rod.

Abstract: The invention discloses a baby seat assembly, including a connecting seat, wherein the connecting seat is connected with a supporting seat capable of rotating relative to the same, the supporting seat is connected with a seat rod, a first locking mechanism is provided between the supporting seat and the connecting seat, the supporting seat is further rotatably connected with a backrest mouldable or foldable relative to the seat rod, a second locking mechanism for locking the backrest and the supporting seat is provided between the both, the supporting seat is further rotatably connected with a front handrail mouldable or foldable relative to the seat rod, and a third locking mechanism for locking the front handrail and the supporting seat is provided between the both; in addition, the backrest is provided with a first unlocking component capable of driving the third locking mechanism to unlock after the second locking mechanism is unlocked and when the backrest is rotated and folded relative to the seat rod,

Abstract: The invention discloses a baby stroller, including a foldable frame, wherein the frame is provided with a locking device for locking same in an unfolded state; the frame is connected with a seat assembly which is configured for a baby to sit when the baby stroller is in the unfolded state and is able to rotate relative to the frame and be closed and folded towards the frame when the baby stroller needs to be folded; and the seat assembly is provided with an unlocking part capable of driving the locking device to unlock when the seat assembly is rotated and folded relative to the frame. The invention has a simple structure and is convenient for operation.