The invention discloses automatic assembling equipment for a check ring of a three-convex balance wheel base. According to the scheme, the automatic assembling equipment comprises a balance wheel basefeeding device, a balance wheel base positioning and clamping device, a check ring feeding device, a screw feeding device, a screw screwing device and a discharging device. The screw screwing devicecomprises a supporting frame, a moving platform, a platform driving assembly, a plurality of electric screw drivers and a screw positioning assembly. Balance wheel bases, check rings and fastening screws are fed to the balance wheel base positioning and clamping device through the balance wheel base feeding device, the check ring feeding device and the screw feeding device correspondingly; the balance wheel base positioning and clamping device is used for positioning and clamping the balance wheel bases; the platform driving assembly drives the moving platform to descend, so that the electricscrew drivers fix the fastening screws to the balance wheel base through descending of the moving platform, so that the check ring is installed; and finally, discharging is conducted through the discharging device. The automatic production process of feeding, press fitting and discharging is achieved, the production efficiency is improved, and the labor intensity is reduced.