This paper introduces the Buddhist spirit into family-therapy developed in western countries and makes an attempt to apply to our emotional experience. It compares, interprets and applies the Hwaŏm Sutra and Hwaŏm Buddhism to systematic family-therapeutic theory. First, the Idea of Hwaŏm Dharmadhātu Pratītyasamutpāda and the view point of systematic family-therapeutic theory have great similarity. Second, the well-functioning family is what is called the family being realized by the Six Marks. Third, the Bodhisattva\'s spirit shows the true quality and attitude of a family-therapist. Fourth, the Ten Pāramitās, i.e. the practical morality of Hwaŏm Buddhism, can be applied to the client\'s therapy and the therapist\'s practice. Fifth, we can seek the way of self-realization in family-therapy through Hwaŏm Sŏn. Hwaŏm Buddhism sets not only as a goal the enlightenment of the individual but also pursues universal awakening, that is to say group enlightenment. I am looking forward to the development of family-therapy through the meeting between family-therapy developed in western countries and Hwaŏm Buddhism.