In the academic circles,there is no study on the cause of Ci's subjectification.Beginning with investigating Zen's influence on ci ,the writer of this paper intend to analyse it through three aspects as follows:First,it is Zen that enlightened the ci writers to discover themselves.Second,it is in the influence of Zen that ci writers enhanced self-confidence.Third,on the basis of the two sides above mentioned,ci writers expressed their self-psychology in more writings.