The invention discloses a method for marinating sauced mutton, comprising the steps of naturally unfreezing a piece of frozen mutton, adding water and fine salt, mixing, soaking under high pressure, taking out and draining off to obtain a first soaked material; soaking broad beans into water, adding rice and wheat bran and mixing uniformly, heating and stewing, cooling to 25-30 DEG C, adding Aspergillus oryzae and Aspergillus niger, preserving the temperature for 2-5 days, adding fine salt, mixing unitformly, heating up to 32-35 DEG C and preserving the temperature for 20-40min, continuing heating to 37-40 DEG C and preserving the temperature for 10-30min, adding the first soaked material and water, mixing uniformly, taking out after 40-60min and draining off to obtain a second soaked material; mixing the second soaked material with fine salt, rum, malt sugar and water uniformly, stewing, taking out, then adding ginger, fine salt, green Chinese onion, garlic, hot pepper, zanthoxylum, syzygium aromaticum, fennel, shrimp, cinnamon, honey, citric acid and monascorubin, continuing stewing, taking out, draining off, cooling, and sterilizing, thereby obtaining the sauced mutton.