The invention discloses coagulant for industrial wastewater treatment and a manufacturing method thereof. The coagulant for industrial wastewater treatment is prepared from, by weight, aluminum hydroxide, ferric hydroxide, ferric sulfate, magnesium sulfate, calcium sulfate, poly dimethyl diallyl ammonium chloride, hydrochloric acid, phosphoric acid, polymethylacrylamide, polyethylacrylamide, cationic-type polyacrylamide, starch, sodium carboxymethylcellulose, modified activated carbon and water. The coagulant has the advantages of being efficient, rapid in precipitation, high in adaptability, convenient to operate, low in consumption and the like; raw materials are easy to obtain, the cost performance is high, the coagulant can be industrially produced in a large scale, has the strong condensation effect, and is wide in application range and capable of treating raw water and industrial wastewater of various types; the water treated by the coagulant is stable in chemical property, and normal use is not affected.