The invention discloses an impurity removal type stirred tank reactor for chemical production. The impurity removal type stirred tank reactor for chemical production comprises a motor, a supporting panel and a secondary stirring cabin; a fixed bearing is installed below the motor; a feeding hole is formed in the left side of the fixed bearing; a driving gear is installed at the upper end of a driving shaft; fixing nuts are installed above a driven gear; a connection screw is installed at the left end of the supporting panel; a driven shaft is arranged below the left end of the supporting panel; a positioning clamping groove is arranged at the left end of a filter layer; and a discharge hole is formed in the right side in the secondary stirring cabin. Compared with the existing ordinary stirred tank reactor, the impurity removal type stirred tank reactor for chemical production adopts a stirring mode of simultaneous rotation of three shafts, effectively improves the stirring efficiencyand effect when stirring a material by matching with different blades, ensures efficient impurity removal ability when performing certain filtering on the stirred material through the filter layer andimproves the stirring effect to a certain degree at the same time.