White spots on the tongue may be caused by bad habits, lichen planus and thrush. 1. Bad life habits: due to long-term smoking and drinking, or often eating spicy and stimulating as well as very hot food, may lead to skin damage, appearing tongue with white spots. 2. Lichen planus: the occurrence of lichen planus due to imbalance of immune function in the body, endocrine disorders or bacterial infections may lead to lesions of the oral mucosa, resulting in white spots on the tongue. 3. Thrush: It is an oral disease caused by Candida albicans infection, mostly seen in infants and young children. It may lead to changes in the skin and mucous membranes, causing symptoms such as white spots on the tongue and pain. When the situation of white spots on the tongue occurs, you should go to the hospital in time, clarify the cause of the disease, and actively treat it under the guidance of the doctor.