PURPOSE: A producing method of fermented soybean paste using barley is provided to prevent the contamination of the soybean paste by various bacteria. CONSTITUTION: A producing method of fermented soybean paste using barley comprises the following steps: injecting aspergillus kawachii or aspergillus oryzae into the steamed barley, and culturing the mixture for 1-3 days at 28-32 deg C to obtain barley koji； injecting bacillus subtilis natto into steamed soybeans, and culturing the mixture for 1-2 days at 35-42 deg C to obtain fermented soybean grains； mixing 10-30 parts of barley koji by weight, 10-20 parts of fermented soybean grains by weight, 39-71 parts of steamed soybeans by weight, and 9-11 parts of edible salt by weight to obtain a soybean paste composition； and aging the soybean paste composition for more than 90 days at 15-25 deg C.본 발명은 보리코지, 콩알메주, 증자한 대두 및 식염을 혼합하여 숙성하는 보리된장 제조방법 또는 보리코지, 증자한 대두 및 식염을 혼합하여 숙성하는 보리된장 제조방법에 관한 것이다.본 발명에 따르면, 풍미 및 기능성이 향상되고 염도가 낮음에도 불구하고 잡균에 의한 오염이 발생하지 않는 된장을 간단한 공정 및 비교적 짧은 시간에 제조할 수 있다.
