To develope a liquid culture media for the mass culture of Beauveria bassiana blastospore, wheat bran and soybean cake were selected as a carbon and nitrogen source, respectively. The composition and final concentration of wheat bran nd soybean cake in liquid culture media were determined by the growth of B. bassiana blastospore. The results showed that the growth of B. bassiana blastospore was effective in the rate of 3 wheat bran : soybean cake and in 5% of final concentration of the liquid culture media, suggesting that the liquid culture media using wheat bran and soybean cake are available.