Ice is an important part of joint loosening treatment, the main principles of which are as follows: 1, ice cold stimulation leads to local capillary constriction, inhibiting blood circulation and reducing post-injury bleeding; 2, local cooling inhibits the local level of the body’s own metabolism, reducing the accumulation of local inflammatory substances after injury and reducing the inflammatory response; 3, ice cold stimulation inhibits nerve conduction and has the effect of increasing the pain threshold, which simply is to reduce the degree of pain. In summary, it can be seen that there is no substitute for the role of ice. After trauma and functional exercises with traumatic possibilities, it must be done in time. Timely icing can minimize the degree of inflammatory reaction, reduce pain, prevent additional damage of functional training, and also create good tissue conditions for the next step of treatment. There are many ways to ice, the following are common: 1, disposable chemical ice bags need to go out to buy, disposable non-reusable, convenient, but the temperature duration is short, and the cost of multiple use is not low, only for emergency use. 2, silicone ice bags need to be specially purchased, the price is not expensive, the temperature can be as low as minus a dozen degrees after removal from the freezer, placed directly on the skin is sure to cause frostbite, ice pack across the object Because of its low heat capacity, quickly return to room temperature, so the temperature is difficult to reach deeper tissue, the estimated effective depth of action is not more than a dozen millimeters, seemingly convenient to use in fact, the effect is limited, only for superficial injuries or emergency use. 3, ice and water mixture is convenient to produce low-cost, home refrigerator can be made by themselves, usually ice and water in a 1:1 ratio mixed in a plastic bag, directly ice on the Skin surface, because the temperature is stable at 0 degrees Celsius, will not cause damage to the tissue, can be safely used. When used, the ice is usually applied for 15-20 minutes each time, several times a day, as needed. This method can be as soon as possible to conduct low temperature to deep tissue, and the effect lasts a long time, so especially recommended, the only drawback requires the use of ready-made, such as the inconvenience of going out can not be used.4, cold therapy machine requires expensive professional treatment equipment, the effect is equivalent to method 3, but can not be found, not which a treatment facility have such conditions. In summary, the most convenient to use the best results or ice and water method, low cost and most importantly, good results, it is recommended that we use widely. Note that in the case of using ice and water mixture, ice is usually in 15-20 minutes, not long and not short, this time just to conduct the temperature to the tissue location, too long ice can lead to reflexive vasodilation, but rather lose part of the original purpose of ice, and, after all, ice is to inhibit circulation inhibit tissue metabolism, too long is not conducive to tissue self-healing of inflammation, so ice must be implemented within a reasonable framework. Some patients often ask: Can I apply hot packs or treatments with thermal effects to reduce swelling and pain? My response is: If the skin temperature is significantly higher than normal in the area involved in the injury, it is not recommended or even strictly forbidden to apply heat and all treatments with thermal effects depending on the degree of local heat. Therefore, at this time, the patient needs to make an accurate assessment of his or her actual situation and take the right action. Note: When there is a wound on the affected skin, the use of ice and water mixture for icing needs to prevent water from leaking out and contaminating the wound.