Purpose: This study purported to understand the process by depth approaches to Choking Under Pressure in golf players. Methods: In order to achieve the study purpose, we used the grounded theory approach that was a widely used qualitative analysis. We selected six golfers as study participants who are KPGA and KLPGA members. The participants were given in-depth interview using unstructured and semi-structured format. The interview was recorded and transcribed using a recording player under the agreement of the participants, and information was collected through text data as well as in-depth interview. For data analysis, constant comparative analysis was performed by collecting and analyzing the data simultaneously based on the open coding, axial coding, and selective coding procedure of grounded theory. Results: By the processes mentioned above, 90 concepts, 21 sub-categories, 11 categories were derived. Our data showed that causal situation in axial coding is under the pressures of golf with the negative thought and contextual condition is important moment, environmental influence. In addition, main phenomenon is differential condition and intervening situation is ‘psychological training’, ‘perceptions of main factor’ and interaction strategy is ‘psychological afterimage remove’, ‘focus the golf’, ‘change the environment. Specially consequence is slowly escape. Conclusion: core category is escape from differential condition and according to type are Mental dependent type, Practice dependent type, Let-it-go type. Also, process analysis is step of risk, making an effort, finding my own way and escape.