The utility model relates to a fast wheel level adjusting structure for a device, which comprises a device body and a supporting wheel. The device body comprises at least one vertical shaft hole, and the axis of the supporting wheel is disposed under the vertical shaft hole. A nut is arranged in the vertical shaft hole. By adjusting the screw threaded on the nut, the height between the support wheel and the device can be adjusted, thereby quickly raising or lowering the support wheel, thereby achieving a low-cost and fast structure. The purpose of adjusting the level of the device.