Science Squirrels Club has been one of the nongovernmental organizations of popular science which have the most powerful influence on network in China. By investigating its micro-blog fans, it is found in the questionnaire survey that its fans are mainly made up of people whose number of men and women, number of liberal arts background and science background, tend to be equal, and people who tend to be young, highly educated, higher income, more stable occupation and having access and enough time to the Internet. The following conclusions can be summarized by carrying out a detailed study of the basic attributes such as gender, age, educational background, and professional: (1) Gender, age, education and professional are the vital reasons that audiences choose different kinds of knowledge of popular science.(2) For the younger juveniles, the network organizations of popular science should focus on improving the simplification, interest, and guide of scientific information.(3) For the elder youth, the network organizations of popular science for the 18-39 year-old should concentrate on improving the professionalism, accuracy and interactivity of scientific knowledge.(4) Among the network organizations of popular science, there are a large number of unstable audiences. But those older men who come from science background, are more easily converted into stable audiences.(5) Micro-blog's defects in disseminating popular science through network science have gradually exposed, its effective arrival rate of information is low and likely to cause misreading.