This paper aims to explore the possible communication between Buddhism and psychotherapy in terms of a phenomenological-experiential approach, so as to articulate a form of Buddhist psychotherapy. Four sections are included in this paper: (1) illustrating phenomenological reduction as a strategy for the translation between Buddhist practice and psychotherapy; (2) describing the essential structure of therapeutic action and experience: (3) describing Buddhist enlightenment to oneself and others through the analysis of the ways of seeing in the Heart Sutra and Chan meditation; and (4) comparing what is obtained from (2) and (3), and articulating the form and meaning of a Buddhist psychotherapy. This paper concludes that the Buddhist way of enlightenment can be described as follows: in "reflexive seeing", one turns one's sight from the constituted to the constituting through transforming experiences and, as a result, differentiates between the mundane and the transcendent modes of being so as to strive for the transcendent living of non-self. Psychotherapy also has the insight into the constituting through the constituted, but stays in the realm of the mundane for the purpose of life improvement. The paper thus derives a possible form of Buddhist psychotherapy and proposes a platform for communication between Buddhism and psychotherapy.