Jing Yue Quan Shu – secret knot”: “Yang knot, the evil has a surplus, should be attacked should be diarrhea; Yin knot, is insufficient, should be supplemented should be nourished. Know the two, that is to know the program of constipation.” Old-age constipation is mostly due to old age and weakness, the function of the internal organs is reduced, the intestinal tract transmission is weak, the loss of vital energy, deficiency of intestinal dryness, gas does not run, intestinal peristalsis weak formation. Based on clinical observation and treatment experience, the author classifies constipation in the elderly into three types: Qi-Yin deficiency, Kidney-Yang deficiency, and Fatigue-Heat mutual knotting, therefore, the treatment takes the three methods of benefitting Qi and nourishing Yin, warming Kidney-Yang, and relieving Heat and fatigue to treat constipation in the elderly. Qi and Yin deficiency: deficiency of kidney essence, deficiency of Qi and blood, loss of fluid distribution, loss of intestinal moistening; excessive consumption of pungent and dry products, and even deficiency of spleen and stomach yin, all of which can affect the large intestine conduction function. The medical lamp continued flame – volume 7: “Huangmao Tang, constipation in old age should be served”, “warm disease article discernment – volume 2”: “Yangming warm disease, no upper jiao evidence, several days without stool, when the next, the person’s yin deficiency, not feasible Cheng Qi, increase the liquid soup main. Danxi Xinfa – dry knots” that “dry knots with little blood cannot be moistened, it is appropriate to nourish Yin”. The author combined with clinical experience in treatment to benefit qi and nourish yin, and the formula is based on the addition and subtraction of Shengve San, in which ginseng benefits qi and generates fluid, maitong nourishes yin and generates fluid, and wu wei zi astringes the lung and generates fluid, which together benefit qi and nourish yin and astringes the lung and generates fluid. Deficiency of kidney yang. Deficiency of kidney yang, diminished warming function, cold condensation in the stomach and intestines, resulting in cold constipation. Jing Yue Quan Shu – secret knot” chapter cloud: “Where the lower jiao Yang deficiency, then Yang does not work, Yang does not work can not be transmitted and Yin condensation in the lower, this Yang deficiency Yin knot also”. Treatment to warm the kidney Yang is the main, the formula is intended to Jichuan decoction plus reduction, “Jing Yue Quanshu – Volume 51” “constipation has to pass, …… if the detection of their vital energy is deficient, neither diarrhea and lower jiao swelling closed, and pass should not be slow, but the main Jichuan decoction, there is no not reach ‘,. In this formula, the meat from the rhizome warms the kidneys and benefits the essence, warms the waist and moistens the intestines, the cow knee tonifies the kidneys and strengthens the waist, the ascending marijuana lightly promotes the Yang, and the zedoary tonifies the deficiency and drains the turbidity. The fatigue and heat of each other evidence of constipation in old age, the deficiency of the kidney is the root, from deficiency to fatigue; blood fatigue can aggravate the deficiency of the kidney, intestinal tract loss of moistening, difficult to get out of the stool. Wang Qingren in the “medical forest correction” pointed out: “yuan qi is deficient, will not be able to reach the blood vessels, blood vessels without gas, will stay and fatigue. The treatise on typhoid: “The patient has no evidence of epiglottis, fever for seven or eight days, although the pulse floating number of people can be under the …… leave yourself under, the pulse number does not resolve, combined with the heat is eliminated grain good hunger, to six or seven days, not stool, there is fatigue blood, it is appropriate to offset the soup.” The treatment is based on diarrhea heat and fatigue, the formula is intended to ward off the soup plus reduction. In the formula, water frogs and snake worms enter the blood circulation to break blood and expel fatigue, peach kernel invigorates blood to resolve fatigue and pass stools, and rhubarb guides fatigue and heat, which together play the effect of diarrhea and expel fatigue. For the treatment of constipation in the elderly, we should pay attention to the regulation of the function of the internal organs, according to the different causes, combined with the systemic symptoms, using different treatment methods, not bound to one side of a method, or a single attack, “Jing Yue Quan Shu – secret knot” warns us: “where the elderly, there are many diseases for the dry knot, …… are required to Detailed investigation of deficiency, not lightly with mannitol, rhubarb, croton …… today temporarily get through fast, and heavy deficiency very deficiency, so that the fundamental day exhaustion, then tomorrow’s knot will be even more, more no medicine carry on”. Therefore, in the treatment of constipation in the elderly to moisten the main, to slow down the appropriate, careful to use the attack of the product. Clinical treatment of constipation in the elderly mostly laxative treatment, long-term use of the effect is poor, and there are certain side effects, and Chinese medicine evidence-based treatment of constipation in the elderly, the efficacy is certain, less side effects, worth promoting the application. However, the clinical classification and efficacy criteria are not uniform, and there is a lack of randomized, multicenter, controlled and blinded clinical studies, so further research is needed.