Abstract: Adding different qualities of phosphorus in the matrix of diamond enhanced carbide tungsten composite button can decrease its sinter temperature to keep low temperature activation sintering. Experimental results show the basis performance of adding 0.3 percent phosphorus is the best. Adopting the adding methods of combining adding nickel powder of the chemical coating nickel & phosphorus with ball-milling adding 0.1 percent phosphorus, the wear ratio of super hard layer and impact resistance of composite button are better than that of only ball-milling adding 0.3 percent phosphorus. It shows that the optimum adding method of phosphorus to implement low temperature activation sintering is adding the chemical coating nickel & phosphorus combined with adding phosphorus by ball-milling.