In general, after the appearance of nausea and weakness, you can drink some light salt water or sugar water to replenish your strength and take a short rest. If the symptom performance does not ease, you should seek medical attention promptly. The phenomenon of nausea and weakness is considered to be related to a variety of factors such as mental factors, colds, pregnancy, digestive system diseases, etc. The common situations are as follows: 1. Mental factors: If you are in the mood of anxiety, tension, worry and mental stress for a long time, there is a possibility that the symptoms of weakness and nausea may appear. Generally relax your mind and divert your attention by listening to music, chatting and walking can ease the symptoms; 2. Pregnancy: nausea and weakness in women of pregnancy age may be the early pregnancy reaction after pregnancy. It is recommended that patients should go to the hospital in time to determine whether they are pregnant by taking blood tests for human chorionic gonadotropin values to avoid blind medication affecting the development of the fetus, and generally the symptoms can be gradually relieved in the 12th week of pregnancy; 3, cold: caused by common viral infections, which can manifest as weakness, nausea and other symptoms. It is recommended to take more rest, eat lightly, pay attention to hydration, and also apply acetaminophen, aspirin and other drugs to relieve fever and analgesia and relieve discomfort; 4, digestive system diseases: such as chronic gastritis, inflammation stimulating the gastric mucosa can cause symptoms of nausea, loss of appetite and weakness, can be used under the guidance of a doctor to inhibit gastric acid secretion, gastric mucosal protective agents, drugs to promote gastrointestinal motility, such as cimetidine, omeprazole, Domperidone, thioglycollate, etc. In addition, diseases such as anemia, liver cirrhosis, tuberculosis, etc. can also lead to weakness and nausea due to physical exertion, and should be treated promptly with relevant examinations to clarify the cause.