Recirculating ball steering gear is a kind of steering system commonly used in automobile,and the steering nut is an important part of the steering gear,which directly affects the quality of the whole vehicle.According to the production need,a steering nut conduit hole position gauge was designed.The detection requirement of the steering nut was analyzed,and the design requirement and structure of the gauge were introduced.The structure of the gauge is simple,the operation is convenient and fast,and the on-site use can ensure the quality of the steering nut and improve the production efficiency.