The invention relates to the field of rolling machines, in particular to a rolling machine air valve manual adjusting device. The rolling machine air valve manual adjusting device comprises a body, amoving plate arranged on the body in a sliding mode and a driving mechanism; and an air port is formed in the body, moreover, the air port is located in the sliding range of the moving plate, and themoving plate is connected to the driving mechanism. The rolling machine air valve manual adjusting device has the advantages that the driving mechanism drives the moving plate to slide in the body, the air port is located in the sliding range of the moving plate, then opening and closing of the air port are achieved, meanwhile, the air volume can be flexibly adjusted through the size of the area of the part, shielded by the moving plate, of the air port, for the rolling machine air valve manual adjusting device, the opening degree of the moving plate can be visually controlled, the adjusting process is reliable, moreover, the manual adjusting device can work in a high-temperature environment for a long time, and is more suitable for production requirements, the influence caused by wind system faults on production is greatly reduced, meanwhile, the leakage quantity of air can be well guaranteed, then the production requirements can be met, moreover, the structure is relatively simple, the installation is convenient, the cost is saved, and the production efficiency is improved.