This study explores the changes in the belief system and world view of college students after bereavement and their traumatic grief to provide a basis for understanding their emotional problems and offering psychotherapies. 940 college students from 6 universities in Fujian Province were investigated using the world view scale(WAS)，life orientation questionnaire(LOT-R)，irrational belief scale(BRBI)，irrational belief scale (IBS)and trauma grief questionnaire(TGI). Results showed that：Firstly，the“impartiality”of the“bereavement group”was significantly lower than that of the control group(t=- 1.97，P＜0.05)，and the randomness of the “bereavement group” was significantly higher than that of the control group. The irrational beliefs and bereavement-related irrational beliefs were significantly higher than those in the control group(t=2.93，7.08，8.36， P＜0.01). Secondly，there was a significant negative correlation between“self-worth”and traumatic grief in the bereaved group(r=-0.18，P＜0.01). Moreover，irrational beliefs and irrational beliefs related to life orientation and bereavement were positively correlated with traumatic grief(r=0.17，0.41，0.40，P＜0.01). Thirdly，the bereavement - related irrational beliefs in the“bereavement group”can significantly predict the response to traumatic grief(B=0.63，0.21，P＜0.01；R² =0.201). In conclusion，university students’assumption of“world meaningfulness”and irrational beliefs are changed after the loss of a university student ，but only irrational beliefs significantly predict their response of traumatic grief. Therefore，it is essential to apply Rational Emotive Behavior Therapy in counselling when dealing with the traumatic grief after the loss of a university student，and the key lies in handling those following irrational beliefs.