The main function of anticoagulants is to fight blood clotting; anticoagulants do not cause the skin to turn white. Anticoagulants are drugs that stop the blood clotting process by affecting clotting factors. Clinically, they are commonly used in the prevention and treatment of thromboembolic diseases, such as after heart valve surgery, in order to prevent the formation of venous thrombosis, need to give anticoagulant therapy; also to prevent deep vein thrombosis, cerebral embolism and acute myocardial infarction thrombosis and expansion, need to give anticoagulant therapy; as well as the early application of diffuse intravascular coagulation. However, anticoagulants are contraindicated in intracranial hemorrhage, active gastrointestinal bleeding, active ulcer disease, malignant hypertension, recent major surgery, severe liver dysfunction, drug allergies. Life should pay attention to sun protection, whitening skin care or through medical beauty in order to become white. If the skin suddenly become white, need to pay attention to whether the disease factors, such as vitiligo, in the appearance of skin white phenomenon, the white spots will not appear pain and itching phenomenon, but with the aggravation of the disease, the white spots will gradually become bigger, especially in the sunlight exposure after the white spots will redden and become bigger, need to pay attention to.