The utility model discloses a gravity regression door with a positioning function for a kitchen refrigerator. The gravity regression door is provided with a door body and is characterized in that the top part and the bottom part of one side of the door body are provided with upper and lower hinge shaft sleeves with lug bosses; each one of the bottoms of the two hinge shaft sleeves is provided with two end part positioning teeth and one middle positioning tooth, which are distributed in an angle of 120 degrees; the two hinge shaft sleeves are integrally provided with two mounting holes; the upper and lower hinge shaft sleeves are respectively arranged on upper and lower hinge bases with upper and lower rotary shafts; the upper rotary shaft is arranged in a mounting hole of the upper hinge shaft sleeve, which is close to the inner side of the door body; the lower rotary shaft is arranged in a mounting hole of the lower hinge shaft sleeve, which is close to the outer side of the door body; a shaft sleeve cover plate is arranged between the lower hinge shaft sleeve and the lower hinge base; the top of the shaft sleeve cover plate is provided with three positioning teeth which are distributed in the angle of 120 degrees; and three positioning grooves formed among the three positioning teeth are respectively mounted in a manner of being matched with the two end part positioning teeth and the middle positioning tooth. According to the gravity regression door disclosed by the utility model, automatic positioning and automatic closing of a refrigerator door can be realized so as to bring about great convenience for a user.