If allergies occur after pregnancy, if the symptoms are mild and there is a clear allergen, get rid of the allergen in time. If skin allergy occurs, rinse repeatedly with water. If the itch is severe, apply glyburide lotion to stop the itch. Avoid excessive scratching because of itching, which may cause skin breakage and infection. If the allergy is more extensive, or if symptoms such as respiratory allergy occur, it is recommended that it is best to go to the hospital promptly and use anti-allergy treatment with calcium, vitamin C and other drugs under the guidance of a doctor. At the same time, pay attention to a reasonable diet and try to avoid seafood foods that can easily cause allergies. For those who are allergic to cold air or pollen, wear protective measures such as masks when going out or try to minimize going out. It is recommended to pay attention to rest after pregnancy, avoid overexertion, pay attention to a reasonable diet, do not eat spicy and stimulating food, and have regular pregnancy tests.