There are several possible reasons for a pale and tasteless mouth: 1, trauma: If it is a burn or trauma, it is easy to produce the phenomenon of no taste in the mouth, because it is easy to cause nerve paralysis. 2, vitamin deficiency: vitamin A deficiency or zinc and iron deficiency, it is easy to cause atrophy of the tongue papillae, taste buds atrophy, when the mouth is easy to produce the phenomenon of pale and tasteless. 3, fungal infection: If there is a large amount of intraoral If there is a lot of dental calculus or bacterial infection in the mouth, it is easy to produce the phenomenon of the mouth light and tasteless. If there is too little saliva secretion in the mouth, such as salivary gland tumors or salivary gland duct stones, elderly people with age-related atrophy, may produce salivary gland secretion of saliva to reduce the phenomenon, which is likely to have a considerable impact on the sense of taste.