Abstract: An opening and closing device of a refrigerator door includes a button, a gear, a cam, an arm, a push panel, and a plurality of stoppers. The button has a gear portion formed vertically on one side thereof and a top portion protruding above a top surface of the door. The gear is engaged with the gear portion of the button. The cam is integrally formed on the gear and fixed on a same shaft as the gear. The arm has a top surface of a rear portion thereof coming in contact with the cam and a front end including a hook, rotatably mounted on the refrigerator door. The push panel has a depression for engaging with the hook of the arm, mounted on the body of the refrigerator and capable of being rotated by a spring. The plurality of stoppers restrict the rotation of the push panel and they are mounted near and on one side of the push panel.