Objective:To investigate the status and characteristics of internet addiction of college students,and related risk factors of internet addiction,to provide evidence for early intervention. Methods:The self-compiled questionnaires networks,social support scale,as well as internet addiction scale were used. 1189 college students from Jiangsu Province were investigated to analyze various factors of the internet addiction between internet addiction group and non internet addiction group. Results:Jiangsu College Students internet addiction rate was 10.6%,and the main influencing factors were grade,network availability,network age,time of day access,weekly access frequency,study stress. Social support scale showed that total score and the dimension scores had sighificantly differences between internet addiction disorder group and the control. Conclusion:The survey results show that college students with internet addiction disorder should be intervented by control the time of internet access,change the internat environment,and personality education of college students.