The phenomenon of vomiting water in patients with advanced gastric cancer is relatively common and indicates that the patient’s condition is very serious. According to a large number of clinical cases, patients with this phenomenon can generally survive for about 3-6 months. The cancer cells of patients with advanced gastric cancer have already spread to other organs of human body, so the possibility of cure is very small, and the clinical treatment for such patients can only focus on controlling the rate of cancer cell spread. The only way to provide energy and prolong the survival time is through intravenous nutrition. During this period, patients should pay more attention to rest, maintain a happy mood, avoid excessive mental tension, and actively cooperate with the doctor’s treatment. The patient should eat nutritious and easily digestible food, avoid spicy, stimulating and cold food, and pay attention to the warmth of the abdomen to avoid getting cold.