The invention provides a system for monitoring, analyzing and auto-feedback of health conditions. The system can analyze the conditions of a user by monitoring the distribution of fat, muscle activities, and changes of poses. The system can further suggest or instructs the user to do suitable exercise and adjust to correct poses or behaviors, to reduce the accumulation of fat and to avoid the withering of muscles. The system can also analyze the psychological conditions to provide better assistance of health. Furthermore, the system includes a sensor, a near-end monitoring center, and a distal-end monitoring center. The sensor can detect the physical and psychological conditions of the user, and transfer related information to the near-end monitoring center, which can monitor, analyze, and display the conditions and either send feedback or provide instructions to the user. Additionally, the user can interact with the distal-end monitoring center via the near-end monitoring center.