There is no hard lump and pain in the breast during breastfeeding, it is best to see what causes it first, and then target treatment. First of all, the pain during breastfeeding is due to the main line of hyperplasia, breast hyperplasia need to control emotions, with traditional Chinese medicine treatment, if not treated in time, may cause breast cancer. Secondly, the pain may be due to the incorrect breastfeeding posture, you need to change the breastfeeding posture, the baby should suck milk alternately on both breasts when eating milk, don’t eat one side alone, there may be the baby has been biting one side of the breast and there is breast pain. Finally, it may be because of not timely milking out the remaining milk inside the breast, milk stagnation caused by inflammation, need to use anti-inflammatory drugs for treatment, you can use a hot towel to apply hot compresses to the breast, there is a very good role in relieving pain. Considering the complexity of the causes, it is best to go to the hospital for targeted treatment.