Baby stroller capable of being pushed and pulled

A baby stroller capable of being pushed and pulled, comprising:

• a frame (100) provided with a first locking slot (110) and a second locking slot (120);
• a handlebar (200) rotatably disposed on the frame (100) and provided with a third locking slot (210);
• a locking mechanism (300) comprising an unlocking part (310), a driving part (320) and a locking part (330), wherein the locking part (330) has an end disposed in the third locking slot (210) and an end locked in the first locking slot (110) or the second locking slot (120);
• the unlocking part (310) is configured to drive, through the driving part (320), the locking part (330) to disengage from the first locking slot (110) or the second locking slot (120) to unlock the handlebar (200);
• a connecting shaft (220) is disposed on the handlebar (200), a connecting hole (130) is formed in the frame (100), and the connecting shaft (220) rotatably penetrates through the connecting hole (130);
• the first locking slot (110), the second locking slot (120) and the third locking slot (210) are all arranged in an axial direction of the connecting shaft (220), and the locking part (330) is movably disposed around the connecting shaft (220);
• multiple first clamping blocks (140) are disposed on the frame (100) at intervals in a circumferential direction of the connecting hole (130), and the first locking slot (110) is located between two adjacent first clamping blocks (140) of the multiple first clamping blocks (140);
• the locking part (330) is a locking gear, wherein a first gear (333) and a second gear (334) are formed as gear extensions on the locking part (330), and the first gear (333) and the second gear (334) can be locked in the first locking slot (110);
• and
• the second locking slot (120) is wider than the second gear (334), wherein when the second gear (334) is locked in the second locking slot (120), the locking part (330) is able to rotate within a preset angle (a) to allow the handlebar (200) to rotate within the preset angle.