The white spots on the lips are most likely due to the following three reasons: 1. Vitiligo has attacked the lips, which is a relatively common white lesion, and patients can go to the dermatology department to confirm the diagnosis. 2. White spots caused by the stimulation of chronic lip inflammation, this white patch is correlated with the patient’s previous exposure to the sun, or often have bad habits of picking the lips. The patient must quit the bad habits, after the chronic lip infection will gradually heal. 3, unexplained white spots, unexplained white spots are precancerous lesions, but most of them are found on the tongue and the mucous membrane of the inner wall of the mouth, and are rare on the lips, or should be differentiated from other diseases. After getting white spots, patients should go to the doctor in time and do not delay the disease.