The inhibitory effects of water and methanol extracts of Doenjang, Chungkookjang and Miso on bovine hyaluronidase were examined. The extracts were vacuum-dried and the resulting pellets were dissolved with 0.1 M acetate buffer with 1$\%$ DMSO to a final concentration of 50 mg/mL. The water extracts of Doenjang, Chungkookjang and Miso inhibited 62$\%$, 70$\% $, 56$\%$ of hyaluronidase activity, respectively, while the extract of crushed soybean inhibited 24$\%$ of the activity. Under the same condition, disodiumcromoglycate known as an anti-allergic drug inhibited 46$\%$ of hyaluronidase activity at the concentration of 0.35 mg/mL as a positive control. Also the methanol extracts of Doenjang, Chungkookjang and Miso inhibited 48$\%$, 52$\%$, 70$\%$ of hvaluronidase activity, respectively, while the extract of crushed soybean inhibited 46$\%$ of the activity. After heat treatment of the water extracts of Doenjang, Chungkookjang and Miso at 100"C for 10 min, hyaluronidase inhibitory effects of them were reduced approximately to half. However, hyaluronidase inhibitory effects of methanol extracts were maintained well even after heat treatment.