A supporting rack includes two foot members each including a hollow foot member body, a foot member cover covering the hollow foot member body and two binding members bilaterally and detachably fastened to the hollow foot member body to secure the foot member cover in place, two support members vertically adjustably mounted on the respective foot members and locked by the respective binding members, a tabletop detachably supported on the support members and adjustable with the support members relative to the foot members to the desired elevation and defining a receiving space between the two foot members beneath the bottom wall thereof for accommodating computer keyboard, mouse or other peripheral devices.