Stretch marks are a kind of swelling lines, mostly appearing in the middle and late stages of pregnancy when the weight gain of pregnant women is more obvious, manifested by the appearance of dark red stripes on the abdomen, white stripes and other symptoms. Stretch marks mostly appear in pregnant women around 6 to 7 months of pregnancy, and will gradually decolorize and atrophy about 0.5 to 1 year after delivery, forming white or silver linear scar-like stripes. Stretch marks appear on the abdomen, chest, thighs and buttocks, with the most common being on the abdomen, which is purple or pink in color in the early stages. Patients usually have no conscious symptoms, but occasionally feel an itching or burning sensation in the evening or when it is quiet. Stretch marks will not have health damage to the patient, once it occurs there may be lifelong, can be improved through the use of topical drugs, phototherapy and other measures to improve the stretch marks, there is a need for treatment is recommended to regular hospitals to seek medical treatment.