Abstract: The industrial-scale technique is researched to produce decabromodiphenyl ethane (DBDPE).In this process, the method of excessively bromizing diphenyl ethane with new catalyzer is used to get DBDPE. Diphenyl ethane was bromized at 58～60 ℃ for 10～14 h, then the crude products were retreated for 8h to get the final product, whose whiteness is 88 (L). The result shows that when the amount of catalyzer is 25% that of the diphenyl ethane, the whiteness of the product will be enhanced and the cost will be reduced. At the same time, the other performances of this commercial DBDPE with excellent thermal stability and good anti-ultraviolet radiation ability are the same as the foreign products.