Whether perm hair can be used during breastfeeding and whether it will affect breastfeeding is answered from two aspects: 1, if the patient is not allergic to hair dyes and perms or is not an allergic patient, perm hair can be used during breastfeeding, and therefore it will not affect breastfeeding; 2, if the patient is an allergic patient and there are allergic factors to the hair dyes and perms, it is not recommended that the patient should use perm hair during breastfeeding. Due to the allergic reaction of scalp caused by hair dyes and perms, contact dermatitis is common in clinic, and erythema, pimples, blisters, and even vesicles and itching can appear on the scalp or face, which requires oral desensitizing drug treatment. Since lactating women are a special group of people, there are some limitations in oral medication, and they need to take oral calcium carbonate D3 chewable tablets and chlorpheniramine maleate tablets under the guidance of a dermatologist. At the same time, in the external medicine can be applied to some compound cypress lotion cold wet compresses, comfrey oil and epidermal growth factor for external use. As some patients may have drowsiness after oral medication, it may affect breastfeeding. Therefore, for patients with allergic constitution, or allergic to hair dyes or perms, it is not recommended to have perms during breastfeeding.