The object of this research is to study changes in the emotional relationship between the counselor and his/her mother after receiving individual psychotherapy. This research adopts grounded theory to conduct semi-structured in-depth interviews with fourteen adults and utilizes qualitative data analysis software, NVivo 8, to manage and analyze the collected data. The results are summarized as follows: 1) seven positive categories and fourteen negative categories of emotional experience in relationship between mother and counselor were identified; 2) there were ten categories of mother counselor relationship changed through individual psychotherapy. The findings of this research confirm the effects of psychotherapy in improving mother-child relationships. Based on the findings and discussion of this research, the researcher makes suggestions on attachment studies, counselor cultivation education, and psychotherapy practice respectively.