The invention provides a control method for a loading initial position in an HMI page of a cold bed. An initial position reset condition control functional block is arranged in initial position program of a loading device, and a reset loading device initial position functional condition is added in an interlocking condition; and an initial position control button is additionally arranged in the HMI page, four groups of original position control buttons are additionally arranged in the initial position control button, and control buttons START and STOP are additionally arranged in the four groups of original position control buttons separately. During operation, the initial position control buttons are firstly opened by clicking, and the loading device is operated to the initial position after control buttons START which need resetting original positions are selected; and after the loading device is detected, the initial position of the loading device in the HMI page is displayed to be green, and the loading device can operate by clicking the control buttons STOP in the HMI page. The control method can realize control on initial positions of four groups of loading devices in the HMI page, so that operation efficiency is improved, the transport effects of the loading devices are improved, operation risks are reduced, and equipment safety is guaranteed.