The invention relates to a suspension frame shaft mounting workbench for a brake lever suspension seat, and relates to the technical field of brake lever suspension seat machining. The suspension frame shaft mounting workbench comprises a workbench body, wherein a fixing device used for fixing the suspension seat and a hydraulic device used for mounting a suspension frame shaft are arranged on theworkbench body; the fixing device comprises a supporting cylinder arranged on the workbench body and a supporting frame arranged on the workbench body and used for fixing the suspension seat; the supporting cylinder is used for supporting a suspension cylinder; the supporting frame is matched with a second connecting plate to fix the suspension seat to the workbench body; the hydraulic device comprises a fixing frame fixedly arranged on the workbench body; a hydraulic cylinder is arranged at the position, over the supporting cylinder, of the upper end of the fixing frame; a mounting head is fixedly arranged at the telescopic end of the hydraulic cylinder; and a clamping groove matched with the end of the suspension frame shaft in shape is formed in the mounting head. The suspension frameshaft mounting workbench has the advantages of being convenient to fix, good in stability and high in mounting precision.