Eighty centimeters times forty centimeters, ninety centimeters times fifty centimeters. There are two sizes of dormitory tables, one is 80 cm by 40 cm, and the other is 90 cm by 50 cm. Because the width of the dormitory bed is generally only 90 cm or one meter, the width of the dormitory table is more than 80 cm. If you choose 90 cm, it is ok, but the space occupied will be fuller. In order to ensure the comfort of the dormitory table and avoid foot bump, we should also pay attention to the distance between the dormitory table and the ground. Under normal circumstances, the distance between the dormitory table and the ground should be kept above 58 cm.