Bumps at the root of the right side of the tongue may be lobulated papillae under normal conditions, and lobulated papillitis or tongue cancer under disease conditions, as follows. 1. Normal condition: lobulated papilla is located at the back of the lateral margin of the tongue, presenting 5~8 parallel arranged folds. 2. Disease situation: (1) Lobulated papillitis: the lobulated papillae are red and swollen, and the inter-papillary folds are more concave. Patients may have obvious discomfort such as irritation pain. (2) Tongue cancer: If there is erosion and ulceration on the surface may occur tongue cancer, which grows fast and infiltrates strongly. After spreading to tongue muscle, it will lead to restriction of tongue movement. It will cause severe pain when secondary infection occurs or invades the root of tongue. There may be other reasons for the lump on the right side of the tongue root, and it is recommended to go to the hospital in time to clarify the cause of the disease and then carry out targeted treatment.