If there are hard lumps during milk return, it is not recommended to squeeze them if there is no pain, most of them can be absorbed on their own within 7-10 days. If the lump is painful, it is recommended to use a towel to apply a hot compress, then rub the lump with your fingers and finally discharge the residual milk. If the hard lump becomes painful and the residual milk is not squeezed out in time, it may induce acute mastitis, which can result in breast swelling, fever, redness and swelling. It is normal to have hard lumps in the breasts during breastfeeding, mainly due to the accumulation of milk in the breasts. During breastfeeding, you can take barley malt boiled water to effectively reduce the amount of milk secretion, so that less milk will be secreted and less milk will accumulate in the breasts, thus avoiding serious lumps and pain caused by milk accumulation.