Birthmarks are divided into hemangioma, coffee spot, nevus of Ota, etc. There is no most effective way to eliminate them, and they can be improved by medication, surgery and physical therapy. 1. Hemangioma: If the birthmark is caused by hemangioma, patients can follow the doctor’s instructions to use topical or oral propranolol and other drugs, which can make the color of the tumor gradually fade. For malignant hemangioma, it can be closed by polydocanol injection or directly removed by surgery. 2. Coffee spot, nevus of Ota: If the birthmark is caused by coffee spot or nevus of Ota, laser treatment is usually the main treatment. Patients can choose alexandrite laser, Q-tuned ruby laser and other ways of treatment, using the high energy generated by the laser to smash the pigment particles, to achieve the effect of removing coffee spots and nevus of Ota. For patients with birthmarks, it is recommended to go to regular hospitals for treatment under the guidance of doctors.