Mastitis is an inflammation caused by a bacterial infection secondary to a milk blockage. The symptoms of mastitis are mainly due to bacterial infection after the blockage of the milk ducts, lumps and pain, pain manifested as stabbing pain, throbbing pain, accompanied by systemic symptoms of infection poisoning, such as fever, fatigue, loss of appetite. Lumps of mastitis have unclear borders and obvious pressure pain. If liquefaction, purulent milk can be sucked out of the milk ducts, mastitis is required to suspend breastfeeding, and also need to take antibiotics anti-inflammatory anti-infection, such as cefdinir tablets. Milk blockage is caused by blockage of the milk ducts leading to milk stagnation. As milk continues to be produced, there will be localized swelling and pain, and hard nodules when touched. There is no need to suspend breastfeeding after a milk blockage, and hot compresses can be applied to relieve the symptoms. If there is a milk blockage or mastitis, it is recommended to go to the hospital in time, under the guidance of the doctor to actively treat, do not self-medication, so as not to cause adverse consequences.