Nasogastric tubes are commonly used in patients who cannot swallow food or the elderly. With aging, the demand is increasing. However, if it enters the trachea by mistake, it may cause infectious pneumonia and even death. The electrical engineering team of Chung Cheng University designed a "Nasogastric Tube Assisted Wireless Sensing System". An antenna is placed in the nasogastric tube to receive electromagnetic waves through a handheld reader to monitor the path of the nasogastric tube. The system is highly sensitive, light, and simple, and the team is currently applying for related patents, hoping to become a sharp tool for medical staff to place nasogastric tubes safely and correctly.