Purple lines on the chest usually do not need special treatment, daily application of olive oil, pay attention to skin cleanliness can be. If it is caused by vasodilatation, you need to find out the cause and then choose medication, surgery and other ways to deal with it. Purple lines on the chest may be due to obesity caused by subcutaneous fibrous layer fracture of the obesity lines; may also be the subcutaneous venous blood vessels, the chest area of the skin itself is relatively thin, and less pigmented, the color is relatively white, you can usually see the blood vessels under the skin, and it will show purple lines. This condition usually does not require special treatment to treat. In addition, if after pregnancy and childbirth, due to the swelling of the breasts, the skin is torn open, resulting in the elastic fibers of the skin being stretched, the skin of the chest will appear stretch marks, and a smaller portion of the stretch marks may show purple lines. Patients can take care of them by applying some olive oil or essential oils, paying attention to skin cleansing in their normal lives, and using some nourishing creams on a regular basis, which will have a positive effect on the conditioning as well as the care of the body. However, purple lines on the chest may also be caused by mastitis, breast tumor and other causes of breast vasodilatation, mastitis can follow the doctor’s instructions to apply penicillin, erythromycin and other drugs; breast malignant tumors caused by surgical resection should be.