There are two important concepts in Bergson's philosophy, (1) elan vital; (2) intuition. And he builds up his philosophy around these two ideas, including his concept on morality, religion and mysticism in his latest work: Two sources of Morality and Religion. The object of intuition is the direct view of the spirit on the creative movement the life impetus, which is the continuous process of becoming of life. The elan vital is responsible for the veolution of all types of life until they reach the highest point, the Absolute and this is the source of mystical experience. This paper is an exposition of Bergon's idea of mysticism. It is divided into three parts, (1) exposition of his key concepts; (2) his concept on mysticism and (3) some reflections.