The utility model discloses a metering pump system. More specifically, the utility model discloses a structure flows the velocity of flow of gel or paste to the extruder in in pairs and carries out the metering pump system that controls. According to the utility model discloses a metering pump system on the one hand includes: the supply thing of gel or paste, the velocity of flow that becomes to provide in gel or the paste inflow extruder is constructed to pump, this pump, the flowmeter, the measurement is constructed into to this flowmeter the velocity of flow of gel or paste, wherein, the flowmeter is constructed and is sent the velocity of flow of electronic signal with control gel or paste to the pump. The utility model provides a can carry out the equipment controlled to flowing to the flow of the gel of extruder or paste.