Symptoms of hyposmia mainly include inability to taste food, decreased saliva production, and loss of appetite. Taste is a special sensation in the mouth. Taste stimulates saliva secretion, promotes appetite and helps digestion. Taste is mainly felt by taste buds. Taste buds are mainly located in the bacillary papillae, contour papillae and lobular papillae of the tongue. Loss of taste may be related to age, food and environmental factors, systemic diseases, oral diseases, mental and psychological factors. The main manifestations are inability to taste food, reduced salivary secretion, and loss of appetite. If you have a loss of taste, it is recommended to go to the hospital in time, complete the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.