The invention discloses a hydraulic pump and a manufacturing technology. The hydraulic pump comprises a pump body, a first end cover, a second end cover, an installing flange, a first bearing, a transmission shaft, a key groove, a sealing ring, a fixing base, a second bearing, a driven shaft, a cavity, a drive gear, a first connecting base, an oil inlet, a filter box, an activated carbon filter plate, an iron scrap filter plate, a second connecting base, an oil outlet, a rubber pad, a driven gear, an installing positioning hole, a base, strengthening ribs, damping springs, damping cotton and vibration relieving partition plates. One side of the pump body is provided with the first end cover through a bolt. One side of the first end cover is provided with the installing flange through a bolt. The sealing ring is arranged on one side of the installing flange. The first bearing is arranged in the installing flange through a bolt. The fixing base is arranged at the bottom of the installingflange through a bolt. The hydraulic pump is convenient to install and stable in transmission, and has good impact resistance and filter functions, and the usage safety is greatly improved.