The reason for using cold compress treatment after spraining the foot is that the local vascular permeability will increase rapidly in a short period of time after spraining the foot, and there will be significant edema in the soft tissue interstices. If cold compress treatment is not carried out, the swelling and pain symptoms will continue to worsen, which is not conducive to soft tissue repair, and the use of cold compress can quickly relieve the symptoms of swelling and pain, and also prevent further soft tissue damage. Therefore, cold compress treatment is usually performed immediately after the patient’s sprain and will be maintained for at least 72 hours. Some patients who can tolerate cold can also apply cold compresses for longer periods of time. Cold compress therapy is usually irreplaceable, effective, and has no significant side effects, and in conjunction with medication and local braking and elevation of the affected limb, can promote rapid recovery.