SARS crisis reveals that the disease prevention and control system (hereinafter the system) in China is too weak to meet the requirements for guaranteeing population health, facilitating economic development and establishing harmonious society. To enhance the system has been regarded as the priority in the next years by the government. Hence, it is necessary to find out what on earth the weaknesses of the existing system are, which of these weaknesses are principal, the harm, root and mechanism of the princ...