PURPOSE: A production method of instant fermented soybeans is provided to boil soaked soybeans in vegetable stock for producing the fermented soybeans, and to mix red ginseng into the fermented soybeans. CONSTITUTION: 100 parts by weight of water, 20 parts by weight of Lentinus edodes, 20 parts by weight of onion, 20 parts by weight of sea tangle, and 10 parts by weight of anchovy are mixed and boiled to obtain vegetable stock. Soybeans are washed, and soaked in the vegetable stock for 4- 16 hours. The soaked soybeans are boiled in a caldron, and aged in a yellow soil room for 24-48 hours at 40-60°;C to obtain fermented soybeans. The fermented soybeans are dried for 10-20 hours. 90-98 wt% of dried fermented soybeans and 2-10 wt% of red ginseng are mixed. 본 발명은 5분 즉석 홍삼 청국장의 제조방법에 관한 것으로서, 더욱 상세하게는 물에 표고버섯, 양파, 다시마 및 멸치를 혼합하여 삶아서 야채 육수를 제조한 다음 청국장을 제조하기 위한 콩을 세척한 후 상기 야채 육수에서 불린 콩을 삶아서 숙성시켜 건조시킨 청국장 90 내지 98 중량%에 홍삼 2 내지 10 중량%를 혼합하여 제조된 5분 즉석 홍삼 청국장의 제조방법에 관한 것이다.