The purpose of the this study was to intellectual elaboration of approaches to inner knowledge and truth, with the universality widely in coaching science through the construction of a Comprehensive Coaching Mental Model by the one-to-one semi-structured, in-depth, open-ended interviewed to proven five high school men's volleyball coaches. Analysis was performed by M-GTA（ Modified Grounded Theory Approach）.As a result, generated 115 pieces of ‘Concept’from 96,521 characters of Talking, and generated 11 pieces of ‘Category’from many ‘Concept’. Moreover , generated 5 pieces of ‘Category Group’ from　many ‘Category’.The generated ‘Category Group’ was respectively ‘Roots of Coach’, ‘Coaching Philosophy’, ‘Concrete Coaching Behavior’, ‘Cultivation of Strength’ and ‘Expected upbringing personality’ Finally, Comprehensive Coaching Mental Model of high school men's volleyball coach was generated.