Working alliance and insight are two key variables in counseling process-outcome research. The relationship between working alliance and therapeutic outcome has been confirmed by many studies. Comparing with it, studies of the relationship between insight and outcome are not that many. Limited research shows that insight could positively influence outcome, including immediate outcome, session outcome, therapeutic outcome and tracing outcome. However, up to now researchers haven’t put these two important variables together to predict outcome. There may be some relationship between working alliance, insight and outcome. In order to investigate the relationship, and the way in which these two variables influence outcome, 94 sessions of 12 complete cases in a university counseling center were studied. Their session recordings were first transcribed. And then 6 observers who were divided into 2 groups evaluated insight in these sessions. Their evaluation tool was Insight Evaluation Manual. It was formed through a qualitative study and a measurement study before. Its reliability and validity has been confirmed through the studies. Transcripts were divided into speaking turns. Observers then judged whether there was insight in each speaking turn according to Insight Evaluation Manual. Clients and counselors completed some questionnaires before or after each session. WAI-SR which measures working alliance, SEQ and one question about session effectiveness with Likert 7-ratings which measure session outcome were filled out after each session by both clients and counselors. OQ were filled out by clients before each session. Data were analyzed through Hierarchical Linear Model 6.0. Results show that working alliance positively influence session outcome, no matter evaluated by clients or counselors, but they cannot predict therapeutic outcome. All of the three facets of working alliance which were evaluated by counselors could positively predict session outcome, and these effects are partially mediated by insight. It probably implies that when the three facts of working alliance are good, counselors are more inclined to use influencing skills, such as interpretation, which could more powerfully facilitate insight’s appearance. Insight is positively related with session effectiveness rated by clients and also positively influence therapeutic outcome. Working alliance doesn’t play a mediating role in the relationship.