White grains on the tongue may be physiologic or caused by pathological factors such as sebaceous gland ectasia, fungal infections, oral ulcers, papilloma, etc. The white grains on the tongue may be caused by the normal soft tissue structures of the tongue, such as fungal papillae and filiform papillae. 1. Physiological factors: white grains on the tongue may be the normal soft tissue structure of the tongue, fungal papillae and filiform papillae, if there is no obvious discomfort, it is considered a normal phenomenon, and there is no need for treatment. 2. Pathological factors (1) Sebaceous gland ectasia: ectopic sebaceous glands can be manifested as white rice-like bumps on the affected area, which are mostly seen in lips, mouth and other parts of the body. If there is no obvious discomfort such as ulceration and pain, no treatment is needed, and observation is sufficient. (2) Fungal infection: Candida albicans infection can cause white patches and spots on the surface of the tongue, which can be rice-like and even white pseudomembrane. It is mostly seen in the elderly, children and immunocompromised people. (3) Mouth ulcers: Mouth ulcers caused by mechanical stimulation, vitamin deficiency, etc. can cause the appearance of white rice grains on the tongue, mostly accompanied by pain. (4) Papilloma: Cephaloma virus infection of the tongue can cause the appearance of small white rice grains on the tongue, which are commonly found on the tip or lateral edge of the tongue. After eliminating physiological factors, it is recommended that people with white granules on the tongue go to the hospital in time to find out the cause and actively treat the cause to avoid delaying the condition.