Although some important progresses were made in the field of the meridian research, no breakthroughs have been achieved. Besides,there are some problems in meridian researches. Particularly, previous research of meridian phenomenon involved lots of subjective elements and outcomes. Researches that use modern scientific techniques to investigate the biological characteristics of meridian phenomenon are urgently needed. Therefore, this study was designed to assess the heat transport characteristics of meridian phenomenon for the Heart and Lung meridians by using infrared thermography. Thus, the biological characteristics of meridian phenomenon could be presented objectively in a scientific methodology.

80 eligible subjects were finally included. Among them, 40 participants were assigned to the lung meridian intervention group, and 40 participants were assigned to the heart meridian intervention group. All 80 participants completed the trial.

Inclusion Criteria:

• Had recent medical examination records confirming the absence of cardiovascular, respiratory, digestive, urinary, hematological, endocrine and neurological diseases
• 20 ≤ age ≤ 40 years, male or female
• Had the ability to communicate with others normally
• An understanding of the entire study protocol
• Signed written informed consent

Exclusion Criteria:

• Had mental illnesses, severe depression, alcohol dependence or a history of drug abuse
• Pregnant or lactating
• Were participating in other trials