Objectives : The purpose of this study is to examine the theory of mind and body practice in Dan-Jeon-Ju-Seon from the point of views of Taoism, Buddhism, and Oriental medicine.  

 Methods : An ideological background and development of Dan-Jeon-Ju-Seon was first examined.
  Then, the definition of, other descriptions of, and various locations of, Dan-Jeon were investigated.
  In addition, the theory of Qi movement of Shui Sheng Huo Jiang (ascent of water Chi and descent of fire Chi) in Dan-Jeon-Ju-Seon was taken into consideration from perspectives on the thought of Taoist Nei Dan (internal alchemy) and Oriental medicine. Finally, the characteristics of mind and body practice in Dan-Jeon-Ju-Seon.
  Results & Conclusions : Dan-Jeon in Dan-Jeon-Ju-Seon consists of three parts, upper, middle, and lower Dan-Jeon, which is related to Jing(sperm, essence)·Qi(breath, eneregy)·Shen(spirit, intellect) of our body. Jing·Qi·Shen is a crucial part in our mind and body, mind and body are connected by energy,and the energy flowispossible by ascent of water Chi and descent of fire Chi. Ultimately, Dan-Jeon-Ju-Seon is a method of practice to keep one's mind and body healthy, and its purpose is to do timeless meditation in our daily lives regardless of time and place.