Supermarket cart

The invention relates to a supermarket cart which comprises a cart frame with universal wheels at the bottom. A handrail is arranged on the cart frame; a driving rod is rotatably connected to the handrail; a supporting plate is arranged in the cart frame; a supporting pipe is arranged on the supporting plate; a stand column is slidably connected into the supporting pipe; a stool is connected to the stand column; a supporting cylinder is rotatably connected to the supporting plate; the supporting cylinder is connected with the driving rod through a driving belt; a first gear ring is arranged onthe supporting cylinder; a stand column is slidably connected with a second gear ring used for being meshed with the first gear ring through a sliding rod; a first magnet is arranged on the second gear ring; a supporting disc is rotatably connected to the stand column; a second magnet and a third magnet are arranged on the supporting disc; the second magnet and the first magnet attract each other; the third magnet and th