When weaning, hard lumps are caused by poor milk flow and stagnation. First of all, you can use a breast pump to suck out part of the stagnant milk, and then use hot compresses and massage to reduce the symptoms, and the remaining milk will be absorbed slowly later. The best way to return milk is to take vitamin B6 orally, and you can also take fried malt to return milk, which will return milk faster and the lumps in the breast will disappear slowly. You can also take oral anti-inflammatory medication and lactation elimination together, the effect may be better. If there is a hard lump, if there is no local redness or swelling, you can observe it temporarily, and it will be softened in a week.