Itchy nipples during breastfeeding can be physiological or pathological. Physiological ones are mainly caused by frequent milk flow from the nipples and prolonged local moisture, causing discomfort such as itchy nipples. Itchy nipples can also occur in new mothers because of the high sensitivity of the nipples. For physiological itchy nipples, you can use saline to wash your nipples and keep them clean and dry, or you can use hot compresses on your nipples to deal with it. The main cause of pathological nipple itching is nippleitis, which can be manifested as nipple cracking in the early stages, and then there will be obvious nipple itching, swelling and pain after the infection. The patient can use saline to cleanse the nipples, or disinfect with iodophor and apply antibiotic cream for treatment. If the nipple infection is more serious, you should temporarily stop feeding your child, you can use a breast pump to suck out the milk and feed it to your child again.