It is cumbersome to calculate the metal powder of hot pressing diamond bit. According to the bit using effect, matrix formula will be revised timely. Based on the VB development, calculation software of metal powder was designed for hot pressing impregnated diamond bit. Only by inputting the bit parameters and the matrix formula, the weight of metal powder and diamond for matrix can be conveniently calculated, and the calculation results can be archived and printed to realize the scientific management on the bit production.