No taste in the mouth, nausea and vomiting are often caused by indigestion, upper respiratory tract infection, chronic gastritis, gastric ulcer and other diseases, which can be treated by medication and surgery, and generally have a good prognosis. Common causes and treatment are as follows: 1, indigestion: indigestion due to digestive dysfunction, resulting in prolonged gastric emptying time, the mouth tasteless, nausea, vomiting symptoms. You can eat appropriate food to strengthen the stomach and promote digestion, such as hawthorn slices, apples, etc.. In severe cases, oral medications to promote gastric power and digestion, such as mosapride and yeast tablets, can be taken under the guidance of doctors. 2. Upper respiratory tract infection: Upper respiratory tract infection caused by bacteria or viruses, patients can have symptoms such as loss of appetite, nausea and vomiting. Anti-viral and anti-bacterial drugs can be applied as prescribed by the doctor, such as Xiao Chai Hu punch, Ban Lan Gen punch, Lian Hua Qing Fei capsule, penicillins, as well as first and second generation cephalosporins, and macrolides or quinolones. Headache, fever, peripheral muscle pain, acetaminophen, aspirin, etc.; 3, chronic gastritis: chronic inflammation of the gastric mucosa caused by Helicobacter pylori infection, bile reflux and drug stimulation, patients can have no taste in the mouth, nausea, vomiting and other symptoms. Bismuth potassium citrate, domperidone, quadruple therapy, aluminum hydroxide and other drugs can be applied to protect the gastric mucosa, adjust the gastrointestinal motor function, eradicate H. pylori, reduce gastric acid, thereby relieving symptoms; 4, gastric ulcer: stomach pain after eating, relieved 1-2 hours after meals, accompanied by acid reflux, heartburn, burping, belching and other symptoms, resulting in patients with no taste in the mouth, nausea, vomiting and other conditions. Patients should pay attention to rest, avoid spicy and stimulating foods, and do not drink coffee or strong tea. Avoid taking non-steroidal anti-inflammatory drugs such as ibuprofen and aspirin. Cimetidine, proton pump inhibitors, bismuth and other drugs can be used for treatment as prescribed by the doctor. If the ulcer is severe and serious complications occur, surgical treatment should be performed.