There are many possibilities for small bumps on the tongue: 1. Firstly, it may be papilloma, which is mainly formed by papilloma virus infection, mostly benign tumors, and sometimes it may be transformed into malignant tumors; 2. Secondly, it may also be vascular malformation, which is a congenital developmental malformation of blood vessels or lymphatic vessels, and the clinical manifestations of vascular malformation from different sources are also different; 3. Other types of tumors, benign tumors grow slowly, with clear boundaries with surrounding tissues and no pain sensation; malignant tumors grow faster, often accompanied by bleeding and pain, but not absolutely; benign tumors may also be transformed into malignant because of local stimulation and other factors. Therefore, if patients find small bumps on the tongue, they should consult a doctor in time to find out the cause of the disease.