SEALING BOX AND STANDING DEVICE

A sealing box and a standing device are disclosed. The sealing box includes an upper cover; a lower cover which is detachably connected to the upper cover and encloses with the upper cover to form an accommodating chamber, and defines a sealing groove toward the upper cover and an inflation hole capable of inflating airflow into the sealing groove; and an elastic sealing ring which includes a sealing end sealedly contacting the upper cover and a deformation end extending into the sealing groove. The deformation end is deformed under force of the airflow and squeezes the sealing groove, so as to apply a force to the lower cover toward the upper cover.