True Buddha Mind Clan is a new religious organization that rose in Zhong-li city of Tao-yuan county of local Taiwan area, and was establish by Mr. Chen Cheng-Lin in 1996. It belongs to one of the Phoenix-Hall system, and develops its specific scripture, doctrine and ritual little by little. Therefore, they can carry out their ideals of educating and saving lives. Although it was only 6 years from True Buddha Mind Clan’s establishment, it already has a complete set of scripture, doctrine and ritual. As one want to research a rising religious organization, it is really a seldom studying case. This thesis just takes True Buddha Mind Clan as a studying case, which mainly used Literature analysis method with Filed work assisted to discover and record the origin, mission, object, organization development, system of fostering Phoenix-students, discipline, ceremony of spirit-writing, phoenix books publishing, thinking system, and practicing method etc., so it can provide reader to discover the secret of the old religion: Phoenix-Hall. Also, the field working record of True Buddha Mind Clan’s spirit-writing ceremony, which was recorded by the writer, has been appended.