The utility model provides a cauldron formula synthesis device, includes the cauldron body, agitating mixing apparatus, material filtering device and pressure buffer. The both ends of the cauldron body are provided with upper cover and low head respectively. Agitating mixing apparatus is including installation frame, driving motor, drive shaft and stirring rake. Material filtering device includes the pumping pipe body, filtration box, filter screen subassembly, filters the pump body, reflux pipe body and valve. Pressure buffer lies in between the pumping pipe body and the first filter screen, and pressure buffer includes a plurality of buffering plate bodys. Above -mentioned cauldron formula synthesis device is through setting up the cauldron body, agitating mixing apparatus and material filtering device to material filtering device can carry out loop filter to the material and get rid of the impurity operation, and the operation of getting rid of impurity is more convenient, and production efficiency is also higher.