The causes of itchy stretch marks consider the following aspects: 1, dry skin: due to too frequent bathing during pregnancy and the application of a large amount of alkaline body wash, resulting in the destruction of the skin barrier, and therefore the itching of the skin. It is recommended that pregnant women take a bath every 3-5 days, and choose a mild body wash, and apply topical moisturizer around the body after the bath. 2, itchy rash of pregnancy: itchy stretch marks are considered to be itchy rash of pregnancy, mainly due to changes in endocrine hormones in the body after pregnancy, resulting in low immunity of the organism, therefore, during pregnancy can be seen in the vicinity of stretch marks erythema, papules, accompanied by itching. If the itching is mild, you can use topical glycolic lotion. If the itching is severe with sleep disturbance at night, then you can take oral loratadine tablets or chlorpheniramine maleate tablets, and you can choose a mixture of mometasone furoate cream and urea vitamin E cream for topical application. In addition, you can also consider the itching of the skin due to the tight clothing worn during pregnancy, resulting in excessive friction between the clothing and the skin of the body, therefore, it is recommended to wear loose, cotton clothing during pregnancy, as well as the need to avoid spicy and irritating food in the diet.