The present disclosure provides a door opening and closing device, and a refrigerator. A door of the refrigerator is rotatably connected to a refrigerator body by means of a rotating shaft, wherein the rotating shaft is fixedly connected to the door, the door opening and closing device includes a connecting rod, a first drive means, a second drive means and an elastic member. The connecting rod is arranged on the door, and the connecting rod includes a first end and a second end that matches a shaft hole. The first drive means is connected to the connecting rod and is configured to drive the connecting rod to rotate. The second drive means is configured to drive the connecting rod to move towards the shaft hole, and cause the second end of the connecting rod to be inserted into the shaft hole.