Preservation of severed fingers from hand trauma by refrigeration can reduce tissue metabolism, slow down tissue degeneration, and create conditions for viable replantation of severed fingers. However, in clinical practice, we sometimes encounter patients who send in broken fingers without proper preservation, and as a result, they cannot be reattached. The common wrong methods of preserving severed fingers are as follows: 1) putting the severed finger directly into an ice cube or an ice bottle with sorbet; 2) soaking the severed finger in disinfectant solution such as alcohol, complex iodine or saline; 3) placing the severed finger in a pocket at will. A severed finger, if properly preserved and sent to the patient in a timely manner, is very helpful to the patient’s recovery from hand trauma. Therefore, it is important to know how to properly preserve the severed finger. The correct preservation method is as follows: After the finger is severed, the broken finger is quickly wrapped in multiple layers of gauze, or a relatively clean cloth or tissue can be wrapped, and then placed in a plastic bag without holes, tighten the bag, so that the bag mouth is facing upward into the insulation bucket, and buried 2/3 of the ice cubes, the temperature to 4 ° C low temperature preservation is more ideal. The broken finger should be preserved in low temperature and dry conditions, and gauze wrapping can prevent frostbite. Doctor’s tip: Ankle sprains are generally accidental injuries. Strengthening the muscles around the ankle joint, wearing appropriate protective gear when playing high-risk sports, and mastering the technical movements of the activities performed can partially prevent the occurrence of ankle sprains or reduce the severity of ankle sprains.