The location of fundic carcinoma is more hidden, and the initial clinical diagnosis is small hard nodules or superficial red spots, which are mostly unnoticed because they are not painful or itchy. If you find white spots, granular rise, or decay or ulcers in your mouth, you should be alert and go to hospital for timely treatment. The age of prevalence of floor of mouth cancer is above 40 years old, and in recent years, the number of incidence has been increasing in China. The location of fundic cancer is hidden, and the initial clinical diagnosis is small hard nodules or superficial red spots, which are mostly unnoticed because they are not painful or itchy. When the tumor reaches several centimeters in diameter, the center of the tumor breaks down, resembling a crater, and a deep fissure-shaped ulcer appears on the floor of the mouth. It may invade to surrounding tissues such as sublingual glands and muscles, resulting in loosening of lower front teeth and restriction of tongue movement; in advanced stage, it may produce pain, drooling and difficulty in eating, etc., accompanied by enlarged lymph nodes in the neck. Therefore, if you find that your mouth has white spots, granular rise, or produce decay and ulcers, you should be alert and promptly go to the hospital for treatment. If you consult the oral mucosa department in the early stage of the disease, timely examination and symptomatic medication can be effectively controlled.