The doctor of traditional Chinese medicine thinks drawn tank can open drain cou justified, and foster. The disease is caused by pathogenic factors of partial body Yin and Yang cheng partial failure, the human body qi lifting disorder, viscera function caused by disorders. When the human body by wind, cold, heat, wet, dry, fire, poison, traumatic invade or internal injury characteristic, can lead to internal organs function disorder, produce the pathological products, such as gore, qi depression, sputum saliva, lodge food, water turbidity and pathogenic fire, etc., these pathological product and pathogenic factor, through the meridians and acupuncture points go channeling body, inverse disorderly qi, retention viscera; YuZu meridians, resulting in a variety of diseases.

Drawing can produce vacuum negative pressure have a strong suction force of drawing, the suction drawing force on the meridian entry points, but will pore suction open and make the skin congestion, cause the body to pathological products from the pores of the skin in vitro of suck out, so that the meridian qi and blood can dredge, make the viscera function to adjust, to achieve the purpose of prevention and treatment of disease.

The doctor of traditional Chinese medicine thinks drawn tank can dredges the channels and collaterals, adjust the qi and blood. Meridian is "line of Yin and Yang, qi and blood, the Confucianism bones and muscles, the joint" physiological functions, such as the general principles of main and collateral channels not qi stagnation, menstruation delay line, can appear skin, meat, muscle, vein and joint, alongwith and atrophy, adverse, or blood not honor, organs of the body is not working, etc.

Through the cup to the skin, pore, meridians, acupuncture point of suction drawing function, and can be guidance camp guard gas can only lose cloth, instigation meridian qi and blood, Confucianism, raise the zang-fu organs organ, warm fur, and at the same time make virtual failure of viscera function can be exciting, clear channels and collaterals, adjust the balance of Yin and Yang, qi and blood can be adjusted, so as to achieve the purpose of curing illness fitness illnesses.