Masculinity is considered as social constructed dynamic process in thesis, to grasp interactive relationship between religion and society, to analyses masculinity's construction in institutional religion, male believers how to react the masculinity's atmosphere constructed by Buddhism mission, and how to deal with the conflict between the sacred and the profane concerning masculinity value. Participant observation and interviewing are accepted, middle-aged men in Blisswisdom's Lamrim Chenmo studying classes in Taipei are object. First, I elaborate research motive from the concept of ＂retrospectively participant observation＂. Second, I setup structural chart from three directions, namely, masculinity constructed by Buddhism mission, masculinity coopetition in the sacred and the profane, and masculinity in Buddhism doctrines. Third, by the founder, mission, doctrines, secular value dimensions, I carry out cross validation from the data of participant observation and interviewing. Finally, I denominate three findings ＂all benevolence origin is revered master＂, ＂Upāsaka in dharma path＂, ＂When kula-putra meet kuladuhitri＂ to present research result. Taking responsibility, speaking good words, destroying arrogance are main three masculinity characters. Meanwhile, the male believers also construct and modulate the masculinity continuously from the founder and the female in order to accord with the mission's and themselves' standards.