The utility model discloses a mechanical equipment installation supporting device, including bottom plate, lower floor's backing plate and upper backing plate, the bottom plate bottom is equipped witha plurality of bottom plates nail, the bottom plate both ends are equipped with the screw hole, and the bottom plate is equipped with the stand in the middle of the upper end, is equipped with the steel ball on the stand, is equipped with the spliced pole on the steel ball, is equipped with the screw rod on the spliced pole, lower floor's backing plate is connected with the steel ball, lower floor's backing plate is connected with the spliced pole, lower floor backing plate upper end is equipped with rubber pad no. 1, upper strata backing plate lower extreme is equipped with rubber pad no. 2,lower floor's backing plate side A labelling board and spirit level, be equipped with the light on the backing plate of upper strata, be equipped with the protective sheath on the spliced pole, avoidmechanical equipment's vibration transmission to give the ground, guarantee the stability of mechanical equipment installation.