Abstract: The exploitation of energy under complex conditions such as deep and ultra - deep wells requires an economic, safe and reliable vertical drilling system. The static push type vertical drilling tool (static-push vertical drilling tool) is a pure mechanical vertical drilling tool that can work under high-temperature and strong-vibration conditions. Based on the technical background of the static push type vertical drilling tool, frictional resistance calculation and finite element analysis of the annular valve clearance flow were carried out for its disc-shaped dynamic and static valve group. The annular valve structure and flow channel were designed based on the rapid shut-off response law of the wellbore high and low edges, and horizontal bench tests were conducted to verify its reliability. The results showed that in order to reduce the friction area of the disc valve, a two-layer combination design was considered. The upper irregular hole was designed with a convex platform, and the lower irregular side flow channel structure was designed. The hard alloy material was used for integral molding. The clearance between the upper and lower valves was controlled at 0.5 mm, and the height of the upper and lower valve convex platforms was controlled at 0.25 mm. The horizontal bench test verified its sealing and flow guiding effect, providing a design reference for static push vertical drilling tools.