PURPOSE: A producing method of fermented soybean paste using fermented soybeans and fermented barley blocks is provided to offer unique flavor and improved taste of the fermented soybean paste to users. CONSTITUTION: A producing method of fermented soybean paste comprises the following steps: producing fermented barley blocks; producing fermented soybeans; aging the fermented soybeans and the fermented barley blocks; mixing 10-35 parts of fermented barley blocks by weight and 35-60 parts of fermented soybeans by weight for 100 parts of fermented soybean paste by weight; and adding flour cake, red pepper, water, and bay salt into the mixture.본 발명은 보리로 만든 메주 및 콩으로 만든 청국장을 이용하여 된장을 제조하는 방법에 대한 것이다. 본 발명의 된장 조성물은 종래 된장에 비하여 식감이 독특하며, 특히 조리 시 맛이 뛰어나다.