This research mainly explores the essentials on the Ritual Practice of Yogacara Ulkā-mukha , including the tracing of the related ideas and classics on which it is based, and the analysis of interviews and opinion surveys to further understand how it can be carried out under the deferred traditions in the past. It has profound and rich significance for modern practice. On the one hand, I hope to understand how this is a convenient way to guide all living beings, and how to include the self-interest and altruism of Mahayana Buddhism; on the other hand, I want to think about the possibility of it being compatible with Fo Guang Shan’s purpose of "purifying people's hearts through mutual practice" sex. Therefore, this article first interprets the relevant interpretations of the the Ritual Practice of Yogacara Ulkā-mukha, combined with the "Generalized Methodology", " Mahayana Treatise on the Five Skandhas ", " The Treatise on the “Lucid Introduction to the One Hundred Dharmas” , "Yogacarabhumi Sastra", etc. I hope to clarify the common principle of ritual practice-gaining the benefits through observation and practice; and on-site visits to the Fo Guang Shan monastry where the puja is held to learn about the current development status, and to visit and participate in the practice of the puja The experience of the participants and the participants explains how they perceive the transformation of their personal consciousness or mind through the chanting and recitation of the ritual texts, and the transformation of their minds, and how they can build confidence in the Dharma, understanding and understanding of the Dharma. The way of practice reflects the spirit and care of human Buddhism. Under the principle of "corresponding to the three karma, the path is high, the path is high, and the mastery of study", this article finds that the main meaning of the spread of the Ritual Practice of Yogacara Ulkā-mukha, is to open the separation of all beings (self and others) through the power of mutual practice. Increasing the cause and condition from evil to good is to cultivate a correct attitude towards life, connect life and life, and then be consciously altruistic-this is the goal of cultivation corresponding to Mahayana Buddhism and Human Buddhism.