The present invention relates to a manufacturing method of fermented mustard kimchi and fermented mustard kimchi manufactured by the same which improve a savory taste. More specifically, the manufacturing method of fermented mustard kimchi comprises: a mustard leaf preparing step of preparing Seasoned cabbage mustard leaves to remove foreign substances from the Seasoned cabbage mustard leaves a mustard leaf pickling step of pickling the prepared Seasoned cabbage mustard leaves at a salt water with concentration of 3-10% for 4-5 hours to allow stems of the prepared Seasoned cabbage mustard leaves to be pickled a seasoning manufacturing step of washing the pickled mustard leaves, removing water from the mustard leaves, and then using raw shrimp, fermented salted shrimp, fermented cooked glutinous rice, salted anchovies, an anchovy sauce, meat broth, garlic, salt, onions, carrots, and dried pepper to manufacture mustard kimchi seasoning a mixing step of mixing the mustard kimchi seasoning manufactured in the seasoning manufacturing step and the pickled mustard leaves and a fermentation step of sealing and fermenting the mustard kimchi mixed with the seasoning in the mixing step at -0.5-5°C for 6-12 months.COPYRIGHT KIPO 2018본 발명은 숙성 갓김치 제조방법 및 이 방법으로 제조된 숙성 갓김치에 관한 것으로서, 보다 상세하게는 봄동 갓을 준비하여, 상기 봄동 갓에서 이물질을 제거하는 갓 손질단계와 상기 손질된 봄동 갓의 줄기가 절여지도록 3 내지 10%의 염수농도에서 4시간 내지 5시간 절이는 갓 절임단계와 상기 절여진 갓을 세척하고 물기를 뺀 후 생새우, 숙성된 새우젓, 숙성된 찰밥, 멸치젓, 멸치액젓, 육수, 마늘, 소금, 양파, 당근, 건고추를 이용하여 갓김치 양념을 제조하는 양념제조단계와 상기 양념제조단계에서 제조된 갓김치 양념과 절여진 갓을 버무리는 버무림단계 및 상기 버무림단계에서 양념과 버무려진 갓김치를 -0.5℃ 내지 5℃에서 6 내지 12개월 밀폐 숙성하는 숙성단계를 포함하는 것을 특징으로 한다.