Lubricating liquid filling system

The invention discloses a lubricating liquid filling system. The lubricating liquid filling system comprises a plurality of filling nozzles, a nozzle support, a nozzle support up-down adjusting mechanism, a lifting mechanism, a conveying belt and a filling bottle clamp, wherein the plurality of filling nozzles are fixed to the nozzle support, the nozzle support is arranged on the nozzle support up-down adjusting mechanism and driven by the nozzle support up-down adjusting mechanism to ascend and descend at a constant speed in the vertical direction, the nozzle support up-down adjusting mechanism is arranged on the lifting mechanism and driven by the lifting mechanism to ascend and descend quickly in the vertical direction, the conveying belt is arranged below the filling nozzles, and the filling bottle clamp is arranged on the upper side of the conveying belt. According to the lubricating liquid filling system, by the adoption of the two lifting systems, the problem that in the prior art, air is mixed easily