Patients with advanced stage of stomach cancer keep sleeping, which may be due to disease metastasis, malnutrition and medication, and can be relieved by medication, strengthening nutrition and changing medication. 1. Disease metastasis: Cancer cells in advanced stage of gastric cancer will spread to the brain, causing patients to be sleepy. Patients can be treated with chemotherapy drugs such as cisplatin and carboplatin or use local radiotherapy to alleviate the symptoms of drowsiness. 2. Malnutrition: patients with advanced stage of gastric cancer may suffer from malnutrition which cannot be absorbed, causing drowsiness; patients can strengthen nutrition by eating less and more meals, or inject nutrients into small intestine through jejunostomy, or inject amino acid nutrient solution through vein. 3. Changing drugs: patients with advanced stage of stomach cancer need to take painkillers, which can also cause drowsiness, patients can change drugs to relieve drowsiness under doctor’s guidance. Patients with advanced stage of stomach cancer should seek medical treatment in time if they feel unwell in daily life, and should not blindly use medicines on their own.