The white raised granules in the mouth may be caused by fibrous tissue hyperplasia, mucus cysts and other reasons. 1. Fibrous tissue hyperplasia: chewing betel nut is one of the main causative factors of oral fibrous tissue hyperplasia, burning sensation in the mouth, especially when eating stimulating food is more pronounced, some have spontaneous pain, long white granules and loss of taste and other symptoms, which can be relieved through the external use of vitamin C tablets, dexamethasone tablets and other drugs. 2. Mucus cysts: when the sublingual gland and other breakage occurs, the oozing mucus spreads into the surrounding tissue interstitial space and is wrapped by the proliferation of fibrous tissue, resulting in exudative mucus cysts, it is recommended that surgical incision is made to squeeze out the pus, and sclerosing agent injections or cryo-laser treatments can be used to pay attention to local hygiene and do not eat spicy and irritating foods. White raised meat grain in the mouth, you can first observe to see if there is any change, if the long-term non-relief, it is recommended to go to the hospital in time to identify the cause of the disease, standardized treatment under the guidance of the doctor.