There are many causes of greasy nausea, which may be caused by early pregnancy reaction, or problems in the gastrointestinal tract or liver and gallbladder system, including indigestion, gastritis, gastric ulcer, stomach tumor, hepatitis, cirrhosis, cholecystitis, etc. For a clear diagnosis, further examination can be done at the hospital, and then the corresponding treatment can be done. 1, functional indigestion: due to improper diet, cold, etc. Caused by gastrointestinal dysfunction, visceral sensitivity to stimuli, can appear to smell greasy nausea, which in turn leads to gastrointestinal discomfort symptoms. You can eat foods that help digestion, such as bananas, yogurt, etc. You can also take drugs to help digestion under the guidance of a doctor to relieve symptoms; 2, gastritis: inflammatory diseases of the gastric mucosa caused by a variety of causes, can appear to smell greasy nausea, can also be accompanied by belching, loss of appetite and other symptoms, attention should be paid to avoid triggers, symptomatic treatment, to relieve the symptoms of taking can be prescribed by the use of proton pump inhibitors, bismuth and other drug therapy, such as Omeprazole, bismuth potassium citrate, etc.; 3, gastric ulcer: gastric ulcer patients can be manifested as stomach pain, loss of appetite, smell and see greasy nausea. Treatment should pay attention to more rest, avoid spicy and irritating food, avoid coffee, strong tea, etc., avoid taking ibuprofen, aspirin and other non-steroidal anti-inflammatory drugs. Proton pump inhibitors, bismuth and other drugs can be used for treatment as prescribed by the doctor. If the ulcer is heavy and serious complications occur, surgery should be performed; 4. Stomach tumor: Patients show symptoms of epigastric pain, loss of appetite and wasting. Usually benign tumors are mainly treated by surgery, malignant tumors are mostly treated by surgery combined with radiotherapy and chemotherapy, and symptomatic anti-vomiting treatment should also be carried out taking Endanserone Hydrochloride capsules, domperidone tablets, etc.; 5, liver and gallbladder system diseases: liver and gallbladder are important organs for fat digestion, when suffering from acute and chronic cirrhosis, cholecystitis, gallstones, acute hepatitis, pancreatitis and other liver and gallbladder diseases, the digestion function of fat is reduced. Therefore, nausea and vomiting will occur when smelling oil or eating greasy food. The patient should be diagnosed by abdominal ultrasound, and given a reasonable treatment plan according to the severity of the disease, as well as symptomatic support treatment, such as the application of domperidone tablets and metoclopramide tablets to stop vomiting; 6, other: In addition to the above diseases, some endocrine diseases and respiratory diseases can directly affect the gastrointestinal tract, resulting in nausea to greasy things. The use of domperidone tablets, metoclopramide tablets, etc. to stop vomiting. In addition to diseases, pregnant women may have early pregnancy reactions due to changes in hormone levels, which may lead to physiological aversion to greasy food, nausea and vomiting. This is a normal physiological phenomenon, which generally does not require intervention and can be relieved by itself without treatment in the middle and late stages of pregnancy.