Itchy stretch marks are considered to be caused with dry skin, itchy rashes of pregnancy, and inappropriate bathing products. 1. Dry skin: stretch marks, a phenomenon of broken skin fibers produced during pregnancy. Bathing too frequently or using alkaline bath products often during pregnancy leads to skin barrier damage. A large loss of skin moisture can cause dry, itchy skin. 2. Itchy Rash of Pregnancy: Itchy Rash of Pregnancy, is an itchy skin damage that occurs during a woman’s pregnancy. The specific cause of the disease is not yet completely clear, and it is considered to be related to the allergic changes induced by pregnancy itself. 3. Inappropriate bathing products: Allergy to certain ingredients in bathing products can lead to erythema, itching and other symptoms. It is recommended to choose suitable bathing products and pay attention to water supplementation. Do not scratch the itchy skin to avoid infection, and go to the dermatology department of the hospital if necessary.