The invention provides a shock absorber bottom cylinder processing tooling. The shock absorber bottom cylinder processing tooling comprises a base, wherein a propelling mechanism is mounted at the first end of the base; an ejector pin is mounted at the second end of the base; a guide rail is arranged on the base between the propelling mechanism and the ejector pin; a sliding base is mounted on the guide rail and is connected with the propelling mechanism; the propelling mechanism can be used for pushing the sliding base and the ejector pin to be close to each other or far from each other; a positioning tooth disk is mounted on the sliding base; the center of the positioning tooth disk directly faces the center of the ejector pin. According to the shock absorber bottom cylinder processing tooling, an cylinder acts quickly; the condition that the clamping force is not enough is avoided; the positioning tooth disk can be used for avoiding the deflection of a cylinder body caused by uneven stress in the processing process; an inlay bar adjusting structure is additionally arranged, so that the abrasion of a guide rail and a dovetail groove can be modified; the clamping stagnation of the sliding base in the moving process is avoided; the great shaking is avoided; the quality of products is ensured; the labor intensity is alleviated; the production efficiency is improved; the cost is reduced.