Objective To investigate the suicide attitude and social support system among college students with suicidal attempts in Chongqing .Methods To randomly select 9 808 college students from 11 universities in Chongqing and administer a self-con-structed questionnaire“Suicide Attitude and Mental Health Status Questionnaire”for analyzing the suicide attitude and social sup-port system of college students with or without suicide attempts .Results The reporting rate of suicide attempts was 1 .7% .The college students with suicide attempts consider that suicide is not preventable ,suicide is not self-control ,for the positive attitude to-wards suicide ,and think that suicide can change the behavior of others .People without suicide attempts are more likely to discrimi-nate against suicide ,the attitude to suicide behavior is negative ,do not think suicide can change others behavior and acknowledge the social importance of suicide .Compared to student who did not report prior attempts ,suicide attempts had significantly lower scores in total score for social support ,actual social support provided ,subjective perception of social support and the utilization of social support .There is significant negative correlation between suicide do not preventive ,suicide do not self control ,positive attitude to-wards suicide and social support scores and scores of each dimension in the student with suicide attempts .The social importance of suicide with social support scores and the scores of each dimension has significant positive correlation .Conclusion College students with suicide attempts tended to be more sure about suicide ,their social support system was poorer .It reminds college educators and social relevant departments to strengthen the suicide knowledge education and improve college students'social support systems ,so that we can provide early intervention for high-risk students with suicide risk ,and prevent the occurrence of suicidal behavior .