Nasogastric tubes are usually changed once every 7-10 days, but the exact change times are not exactly the same. If the patient is using a regular nasal gastrostomy tube, it should be changed once every 7 days; if the patient is using a silicone gastrostomy tube, it should be changed every 3 weeks; if the patient is using a polyurethane gastrostomy tube, it should be changed once a month. Since patients need to use the nasal feeding tube to eat every day, the nasal feeding tube may become clogged, and when this happens, it needs to be changed in time even if it has not reached the replacement time, so the exact replacement time of the nasal feeding tube varies. Nasogastric tubes are mainly used to provide nutrition to patients who cannot eat by mouth, to ensure that patients can consume enough protein and calories, and also to provide therapeutic drugs to patients who cannot take drugs by mouth. When using a nasal feeding tube, you need to pay attention to small meals, not too much food per injection, try to break up the food, and often use water to flush the gastric tube after each injection of food, so as to avoid food blockage of the gastric tube. How often to change the nasal feeding tube needs to strictly follow the doctor’s instructions, according to the patient’s specific situation to judge.