The utility model discloses a polyurethane production system, including throwing material device, reaction unit, dispersion devices, exsolution device and latting drown device, dispersion devices adopts the high speed dispersion cauldron, makes the dispersed emulsion of material more thorough, between dispersion devices and the exsolution device, adopt dismantled and assembled hose to be connected respectively between exsolution device and the latting drown device, it is convenient to connect, as dispersion devices, exsolution device, when the latting drown device sets up a plurality of cauldron respectively, can also change the object of connection as required. The utility model discloses a polyurethane production system is multiple functional, can realize polyurethane's full -automatic production, and the practicality is convenient again.