The Internet has been widely used for various purposes while the telemedicine has been researched to provide better care to people in the remote area. The combination of two concepts can be used with multiple health-care agencies containing medical knowledge in distributed databases. We are currently developing an internet-based medical diagnosis system, called Medical Knowledge Technology (MKT) system to support both medical experts and patients in the way that multiple medical experts coordinately diagnose the illnesses for a patient with confidence levels. The goal of MKT system is to support world wide, especially in the rural areas that lack of medical teams but have an internet access.