The "Avataṃsaka Sutra"（transliterated as Hua-Yen Sutra）praises the "Bodhisattva" says: "Do not seek happiness for yourself, may all living beings be free from suffering." Bodhisattva with vows in sincere are engaged in awakening all sentient beings. Bodhisattvas are not only guides but also partners for pursuing peacefulness and happiness in the world. "Bodhisattva's vows and its implement" is the base of achieving Buddhahood, vow based on wisdom and deeds based on virtue. Our vows and the wisdom are originally inherited from the one’s own Buddha Nature inwardly which is the base of Bodhicitta forwarding to the foundation of Buddhahood; if we conduct virtues and optimize our mind as well, you will accumulate all the wonderful merits. The subtle metaphor in the Sutra is due to the obsession of all living beings, therefore, the Bodhisattva preaches dharma on behalf of the Buddha while Buddha radiates the light. By reviewing literatures, this paper intends to go through a study on the establishment and evolution of the "Avataṃsaka Sutra", by means of the approach of religious phenomenology to explore the profound meaning of the Sutra and have a discussion on the history of idea. Hopefully, by One Truth derive to One Reality, with those to reveal the endless treasures in our mindsets. Buddhism advocates that fate is in one's own hands, not relying on the external force of God. "Avataṃsaka Sutra" embraces the practice of Mahayana and Theravāda, the essence and examples of religious practice, the perfect mingle of truth and object, direct view to the Dharma realm. It is the one Sutra for Buddhism emphasizes the key points of "faith, realization, practice and demonstrate", which is so called "wealth & honor Avataṃsaka". The Sutra clarifies all dharmas and phenomena in the Dharma Realm is of "mutual origin and interdependence", and the interpretation of the wonderful meaning of "the three realms are only the mind, and all dharmas are only fabricated illusions". Starting from The honored one’s wonderfully accomplishment, it demonstrates the bodhisattva's deeds and wishes, willing to practice with his life; the wisdom of Mañjuśrī Bodhisattva、the vows of the Samantabhadra, the bodhicitta of the Sudhana, and the compassion and beneficial to the world of the Maitreya Bodhisattva reflect the perfect personality of the soul, the perfect development originated from awareness and wisdom—— everyone possesses Buddha nature. Learning from Bodhisattvas to make vows, one can also become Buddha. Just like Sudhana, practice life-long and get approved to enter the Dharma Realm, showing the ultimate meaning of the wholesome and merits of life. Avataṃsaka (Hua-yen) teachings have enriched Chinese culture, and even influenced the practice of Buddhism in China— the rise of Zen and then enhanced the development of New Confucianism theory in later generations. While post-modern human beings live in the excessive pursuit of individual freedom, their view of consumption endangers other lives and species, deriving ecological counterattack in the nature
