这是一个疾病诊断专家系统，该系统简单的演示了实用专家系统的工作流程。虽然在人工智能领域专家系统已经被遗弃，但是在应用领域，专家系统仍然有很多可以被应用的地方，还是有一定价值的。-This is a disease diagnostic expert system, which was simple demonstration of a practical expert system workflow. Although in the field of artificial intelligence expert system has been abandoned, but in application areas, expert system, there are still many can be applied where there is certain value.