Abstract： There have been many controversies about triple energizers theory since ancient times. In order to explore its source，the original text of Huang Di Nei Jing (The Yellow Emperor's Inner Classic) was sorted out. There are two kinds of triple energizers theory in Huang Di Nei Jing：the combination theory of triple energizers and the division theory of upper，middle and lower energizers. The former is only the water channel from the intestine to the bladder，and the latter adds the channel of nutrient and defense qi out of the stomach based on the former. The anatomical basis of triple energizers is the membrane in the abdominal cavity，which is the ‘visible’ bowel. The ‘invisible form’ believed by the later generations means that triple energizers do not have its own independent shape but present the shape of viscera and bowels wrapped in it. This paper analyzes the contradiction and the origin of triple energizers theory in Huang Di Nei Jing，and speculates the origin of the theory of triple energizers referring to different parts in later generations. On the basis of the combination theory of triple energizers and the division theory of upper， middle and lower energizers in Huang Di Nei Jing， the theory extends the concept of triple energizers as peritoneum to the thoracic peritoneum，which is connected with the internal viscera of the human body，and divides the internal viscera into upper，middle and lower parts by the name of“upper energizer，middle energizer and lower energizer”，which is not the original intention of the triple energizers theory in Huang Di Nei Jing (The Yellow Emperor’s Inner Classic).