The mortality rate of submaxillary gland tumor is not certain, it needs to be judged by combining the condition, treatment and daily care. 1. Condition: Submaxillary gland tumor is a kind of oral tumor in the submandibular region of human body, which usually has a higher chance of malignant tumor, around 60%. If the patient’s condition is diagnosed as malignant submandibular gland tumor after examination, then the five-year survival rate is around 30%. However, if the tumor is benign, it will not affect the patient’s life after surgical removal. 2. Treatment: the mortality rate of submandibular gland tumor has a great relationship with the treatment. If the tumor is in the early stage of malignant tumor, the tumor can be removed by surgery, and if the tumor is removed cleanly, it basically won’t affect the patient’s life. If the tumor is removed cleanly, it basically will not affect the patient’s life. However, if the tumor cannot be removed and the patient actively adopts the treatment measures of radiotherapy or chemotherapy, the five-year survival rate is about 30%, and if the patient doesn’t accept the treatment, the five-year survival rate is 5%. 3. Daily care: if you want to prolong the life of patients with submaxillary gland tumor, you need to take good care of them in daily life. If you can keep good habits, improve diet, eat more light food and keep oral hygiene, the five-year survival rate of such patients is relatively high, but if you don’t take good care of them, the five-year survival rate will be lowered accordingly. Submaxillary gland tumors should be treated in time after the disease occurs, and the earlier the patient is treated, the better the condition improves, and the lower the impact on the patient’s life expectancy will be.