Walnut is one of the four largest nuts in the world, which has high nutritional and economic value. Known as "longevity fruit" and "Yizi", it can be called a masterpiece of nature. Walnut can be used for a variety of purposes, with the functions of playing, health care, viewing, collection and so on, showing rich cultural connotations. The advantage of playing pecan is that it is not cold in winter and impetuous in summer. Walnut combines rigidity with softness, smooth as grease, easy to operate and use, and makes people fondle it. It can be described as a "God-given treasure". Playing walnuts means taking exercise with you, with health in your pocket. Not limited by environment, site, climate, time, age and economic conditions, we can do whatever we want at any time and place. Scientific practice has proved that playing walnuts can delay the aging of the body, achieve the effects of relaxing the pulse and dredging collaterals, promoting blood circulation and removing blood stasis, calming the heart and calming the nerves, and play a great role in preventing stroke, coronary heart disease, occupational diseases, cardiovascular diseases and Alzheimer's disease. "Hand therapy walnut" is also called "fitness walnut" and "palm bead". Walnut therapy is to use its unique texture, concave and convex, sharp edges and corners to exercise hands by kneading, pressing, pressing, stabbing, pinching, kneading and rolling, and massage to stimulate skin meridians, especially the acupoints of the palm, so as to achieve the effect of "treating diseases and strengthening the body without disease". Huangdi Neijing said: "Meridian, therefore, determines life and death, handles all diseases, and adjusts excess and deficiency." The meridians of the hand are the starting and ending points of several meridians of the human body, which circulate through the movements of the three Yin San yang, six meridians and six veins of the hand. Meridian is the link between brain nerve and internal organs. Rubbing walnuts every day can stimulate these acupoints, dredge meridians, harmonize qi and blood, relax tendons and activate collaterals, strengthen the internal organs, strengthen the brain and improve intelligence, and maintain the normal function of the human body. It has good curative effect on hemiplegia sequelae, cervical spondylosis, scapulohumeral periarthritis, coronary heart disease, finger dysfunction and other diseases. In addition, due to the frequent friction between walnut and palm bark, static electricity and thermal effect will also play a role in promoting blood circulation, tonifying qi and blood, tonifying kidney and fixing essence, and treating diseases in all parts of the body.