With the continuous increase in China’s population, the number of people visiting hospitals are also increasing. In order to meet the needs of patients, hospitals are expanding their scale, and departments are becoming more and more sophisticated. While improving the quality of medical services, it has become more difficult for patients to seek medical consultation. In order to improve the quality of medical services, a indoor navigation system based on QR code has been designed for hospitals, which realizes indoor navigation by scanning a QR code. This low-cost technology has accurate positioning, which brings convenience in locating and navigating departments.