As a compound therapy, catgut embedding at acupoints can stimulate acupoints for a long time in the body by using the function of protein lines. This kind of stimulation process of combining rigidity with softness can adjust the viscera as a whole, making it "the secret of Yin and Yang". Acupoint catgut embedding is used to lose weight, which has a stronger acupuncture effect than general acupuncture methods and has the function of "dredging meridians and regulating qi and blood". As a heterogeneous protein, catgut can induce allergic reaction, sensitize lymphoid tissue, cooperate with antibodies and macrophages to destroy, decompose and liquefy catgut, and decompose it into peptides and amino acids. The catgut is softened, decomposed, liquefied and absorbed in the body, which has a comprehensive effect on acupoints, nerves and the whole center, enhancing the activity ability of tissues and organs, accelerating blood circulation and lymphatic reflux, and enhancing local metabolism. Physiological and biochemical stimulation of acupoints can last for 15 days or longer.