This paper summarizes the features of web sites that would be useful to infectious diseases physicians by exploring the Internet through search engine including Google

Baidu and Ya-hoo. Meanwhile

suggestions from professional forums

web sites and publications are also taken into consideration. Nine Comprehensive sites containing three categories and more of microbial pathogens

nine special sites for parasites

four special sites for fungi

two special sites for viruses and two special sites for bacteria are collected. Subjective navigation for each site is given. Features of these sites

including laboratory images

clinical images and number of images are also described.