In this research, we develop an advanced golf sport training platform using body sensor network on cloud. A user does not spend a lot of money to employ a professional coach and does not need high-end training equipment. Only sensors, e.g., G-sensor and Gyro, and Notebook/Smartphone are required. Sensor data are wear/attached on a trainee body/golf shaft, and are transmitted through a Bluetooth device or 3G/Wi-Fi. Then, motion information is compared with standard postures on cloud, and a trainee can obtain the suggestion regarding their sport postures.