Ice-water mixture is a mixture of ice and water mixed together, the temperature of ice-water mixture is about 0°C. Ice cold therapy – is the use of ice water mixture on the local cold therapy, is an acute injury as well as arthritis acute exacerbation of the common physical therapy in the simplest way. Ice cold therapy is mainly through the application of ice water mixture of low temperature effect on the skin and deep tissue, can promote vasoconstriction, which can effectively reduce bleeding, and timely cold compress can also reduce the metabolism products on the nerve endings of the stimulation and compression. Therefore, ice cold therapy can reduce local bleeding, relieve swelling and reduce inflammatory response, so as to achieve the purpose of rapid pain relief. Ice cold therapy is easy to take materials, simple operation method, and practical effect. It can quickly relieve pain and reduce swelling. The simple production method of external ice and water mixture is as follows: take a plastic bag (or plastic bag), first loaded with the right amount of water (300-500ml or so), and then add an equal portion of ice [300-500g or so (300-500ml)] mixed, and tighten the plastic bag (or plastic bag), it can be used. Note: 1, tighten the mouth of the plastic bag slightly to the upper end of the bag upward, the bag of air extrusion and reserve a certain amount of space, in order to apply more convenient to touch the skin or injury. 2, ice time is generally 15 ~ 20 minutes each time. 1 ~ 2 hours once. Can be adjusted according to the specific appropriate. But should not ice version too long, so as not to cause excessive local vasoconstriction caused by frostbite, resulting in peripheral vascular lesions. 3, the joint parts of the ice, gently covered in order to uniformly cool down; avoid taking out the frozen layer of hard-on ice packs, not only can not effectively ice power dressing, but also in the joints of the bulge will cause frostbite. Therefore, ice and water mixture is a fast pain relief, reduce swelling of the magic weapon.