Although gastroscopy is an advanced examination technology, it is also an invasive examination. The following are some precautions to take after gastroscopy: 1, after gastroscopy, do not get up and get out of bed immediately to avoid postural dizziness. If you have throat discomfort or hoarseness after the examination, you can gargle with light salt water for a short while, and it will generally be relieved after a while, so don’t be too nervous. 3, three days after the end of the examination to observe whether there is vomiting blood, blood in the stool, abdominal pain, etc., if found abnormalities should immediately consult a doctor, for appropriate treatment. 4, the examination is if the gastric mucosa biopsy, the mucosa will be some small damage, after the examination it is advisable to eat some liquid or semi-liquid food, such as millet porridge, etc., warm and soft, avoid overheating, so as not to aggravate the damage to the mucosa. At the same time, do not eat cold, spicy and rough food. 5, if you do painless gastroscopy, after the gastroscopy may also have the after-effects of anesthesia, so you can not drink water immediately, easy to choke and cough, serious aspiration pneumonia will be caused. It may take two hours before you start to eat and drink. The above are the precautions to be taken after gastroscopy, but you should follow the doctor’s instructions. If you have any doubts, it is best to consult your primary care doctor in time.