Stomach discomfort, nausea, vomiting and weakness, when these three symptoms appear at the same time, can be seen in pregnancy, mental factors, heat stroke, gastrointestinal tract infections, etc. It is recommended to clarify the specific causes and give reasonable treatment and treatment. 1. Pregnancy: In early pregnancy, pregnant women secrete a large amount of progesterone to reduce the contraction of the smooth muscle of the uterus, which also affects the peristalsis of the smooth muscle of the gastrointestinal tract, resulting in indigestion and nausea and urge to vomit. In addition, the increase in chorionic gonadotropin can also lead to fatigue and a feeling of lethargy. It is recommended to keep the air fresh and the room temperature should not be too high. Eat a light diet and avoid excessive greasiness. Pregnant women themselves try to maintain a relaxed mood, which can reduce the appearance of nausea, vomiting and weakness; 2. Mental factors: When a person is in a state of long-term tension, mental stress and anxiety, it may lead to gastrointestinal tract dysfunction and stomach discomfort, nausea and weakness. If there are no the above three conditions, and when the mental stress is high, you can carry out psychological counseling to relieve mental stress, or find some ways to relieve stress, so that you can break free from the bad mood; 3, heatstroke: mostly occurs in summer, too long in the high temperature and high humidity environment activities, patients can appear nausea, vomiting, weakness performance. When heatstroke occurs, the patient needs to be moved to a cool place in time, open the lapels, spray with cool water or wipe the body with a wet towel, fan the wind to accelerate body heat dissipation, and can be given patchouli water to relieve symptoms. If the symptoms continue not to relieve, or even appear unconscious, should be immediately sent to the hospital emergency; 4, gastrointestinal tract infection: such as gastrointestinal type of cold caused by adenovirus, influenza virus, coronavirus infection, or acute gastroenteritis caused by bacterial infection after eating unclean diet, patients will appear nausea, vomiting, diarrhea and other gastrointestinal symptoms, as well as fever, malaise and other manifestations of infection. For this type of patient, it is necessary to go to the hospital to distinguish whether it is caused by a viral infection or a bacterial infection. If it is a gastrointestinal cold, medications such as montelukast and ribavirin may be prescribed for treatment. In the case of acute gastroenteritis with bacterial infection, the doctor will prescribe the appropriate antibiotics for treatment based on the bacterial culture results.