The invention provides a manufacturing and processing method for a spiral gear capable of axially moving. The manufacturing and processing method comprises the following steps: casting, roughly turning each surface, carrying out UT checking, hardening and tempering, carrying out semi-finishing on each surface, carrying out primary making-out, drawing out a central line and a bearing line of each angle, milling and boring a spiral structure on the outer surface, checking spiral surface allowance, carrying out turning, processing inner and outer circles and an axial dimension, carrying out gear hobbing, clamping a lower end surface, carrying out secondary marking-out, drawing the positions of the bearing lines and relative bearings of holes, carrying out drilling processing, drilling threaded holes in a step of an inner wall, tapping, tapping pipe threads, carrying out precision boring, carrying out finish-milling on a spiral surface, carrying out distribution drilling and removing burrs. Components processed by the method meet requirements of a blast furnace working environment, so that the components have relatively good strength and rotation flexibility, and are longer in service lives; and under the action of a drive gear, the spiral gear axially moves along a guide part, and therefore, the manufacturing and processing method is suitable for large-scale popularization.