1, to reduce local bleeding: cold hydrogel paste can make local blood vessels, blood slow down, increase the viscosity of the blood, is conducive to blood clotting to control bleeding. Applicable to the initial stage of local soft tissue injury.

　　2, to reduce the organization's swelling and pain: Cold hydrogel paste can inhibit cell activity, reduce the transmission of neurological impulses, reduce the sensitivity of the nerve endings to reduce pain; while cold blood vessels contraction, decreased permeability of the blood vessel wall, Exudation is reduced, and the pain caused by swelling of the nerve endings due to tissue swelling is relieved.

　　3. Inflammation control: Hydrogel cold patches reduce local blood flow, reduce cell metabolism and bacterial viability, and limit the spread of inflammation. Suitable for early inflammation.

　　Cold compress and analgesic principle: After the soft tissue damage, the soft tissues such as local muscles, ligaments and psoas muscle will have different degrees of tearing and capillary bleeding, local swelling, pain and dysfunction. Cold compresses the affected area to shrink capillaries, relieve local congestion and eliminate swelling; it can reduce the sensitivity of nerve endings and relieve pain.