An air bleeder of an accumulator is provided with a mounting plate. Mounting holes are formed in two sides of the mounting plate, a circular hole is formed in the middle of the mounting plate, a ball bearing is embedded inside the circular hole, a supporting ring is embedded on the inner periphery of the ball bearing, a radial long-strip hole is formed in the supporting ring, a short circular tube which can slide inside the long-strip hole is embedded inside the long-strip hole, a universal bearing is embedded inside the short circular tube, an inner threaded tube is embedded in the inner hole of the universal bearing, and a shifting rod with the lower end being provided with a conical head is arranged inside the inner threaded tube in a screwing mode, wherein the shifting rod is provided with external threads. The air bleeder of the accumulator can be fixedly arranged on a one-way air valve at the upper end of a cylinder body of the accumulator, and is provided with the conical head shifting rod capable of swinging and rotating, the shifting rod can be inserted in an annular valve opening inside an air inlet of a combined valve body, the conical head of the shifting rod is used for gradually pressing rubber gaskets adhered to the annular valve opening downward and stripping the rubber gaskets, and compressed air inside the accumulator is exhausted.