Pump head of plunger pump for fracturing

A left plunger axial hole and a right plunger axial hole are formed in a stainless steel pump head body, a first annular groove is formed in the left plunger axial hole, a first silver welding rod is installed in the first annular groove, a first hard alloy lining is installed in the left plunger axial hole and connected into a whole in a brazed mode, and a second annular groove is formed in the right plunger axial hole. A second silver welding rod is arranged in the second annular groove, and a second hard alloy lining is arranged in an axial hole of the right plunger to be connected into a whole through brazing. The hard alloy lining is arranged in an axial hole of the pump head plunger, and axial and circumferential sliding of the hard alloy lining is limited through brazing connection. The hard alloy bushing is arranged in the axial hole of the pump head plunger, and the service life of the pump head is greatly prolonged and the maintenance cost is reduced by utilizing the wear resistance and the scouring