Spring auxiliary support

The invention relates to a spring auxiliary support which comprises a base. A shaft hole is arranged in the middle of the base, a screw hole is arranged on the lateral face of the base, and an inner hexagon screw is arranged in the screw hole. A supporting shaft is movably arranged in the shaft hole, a spring is arranged between the bottom of the shaft hole and the supporting shaft, a key groove is arranged on the lateral face of the supporting shaft, and a flat gasket and a hexagon thin nut are arranged at the upper portion of the supporting shaft. The spring auxiliary support is stable in force control and does not easily generate vibration when parts are machined, and vibration lines on the machining surfaces are avoided.