A ring of pain underneath the breast during breastfeeding is caused by postpartum accumulation of milk, external impact, mastitis, mammary cysts and other factors, and a ring of pain underneath the breast during breastfeeding is a normal phenomenon. If it is caused by the accumulation of breast milk after delivery, you can use hot towels to apply hot compresses to the place of accumulation of breast milk, and massage the place of accumulation of breast milk with your hands to squeeze out the milk. If you’re not sure what you’re looking for, you’ll find that the best way to get rid of the pain is to use a hot towel to apply a warm compress to the area. In the early stages of mastitis, the milk ducts are blocked, which is characterized by localized redness, swelling, heat and pain, and a visible painful lump in the breast. When the infection is further aggravated, fever may develop, leading to unfavorable milk production and affecting the baby. Anti-infection treatment is needed, as well as stopping breastfeeding and emptying the milk. Breast cysts are the result of further progression of mastitis and require surgery. They are also painful when strong external pressure is applied to the breast area, so special care should be taken to protect the breasts during breastfeeding.