All kinds of trauma, regardless of the size and depth of the wound, should be timely and correct treatment, if not handled properly, will cause wound bleeding, infection, septic, serious will get tetanus, limb amputation, and even life-threatening. If the wound is treated correctly, it can heal quickly; on the contrary, it may become septic and infected and will not heal for a long time, and even endanger the life due to the complication of systemic infection, gas gangrene, tetanus and so on. Therefore, for traumatic wounds, it is necessary to carry out strict and serious treatment. The principles of wound treatment are: 1.Disinfection: When the skin is wounded, the integrity of the skin is damaged, and bacteria have a chance to take advantage of it, so in order to reduce the invasion of bacteria, the wound should be carefully disinfected. 2, stop bleeding: can be timely according to the specific situation to stop bleeding. 3, dressing: wound dressing properly, can make it less bleeding, less septic, less pain. Tie to do fast, accurate, light, firm. Specific steps are: (1) generally can be used first with iodine followed by alcohol disinfection, along the edge of the wound from the inside out, do not put iodine, alcohol into the wound. If there is a foreign body in the wound, it should be handled carefully, large and easy to take out; deep and small is not easy to take out do not take reluctantly, so as not to bring bacteria into the wound or increase bleeding. (2) after rinsing can be coated with some drugs on the wound surface, small wounds can be coated with a little red mercury (red potion) or purple potion on its superficial surface, larger wounds should not be coated with the above-mentioned potions, so as not to add difficulties to the next step of treatment. (3) Use sterilized gauze or clean bandage, handkerchief, cloth, red cloth belt, etc., and pay attention to the appropriate tightness of the bandage, so as not to affect the blood circulation, not to directly touch the wound with hands, the bandage should be 5-10 cm beyond the edge of the wound, and bandage (or triangular towel) wrapping. The exposed fracture end of the activity and cause pain and continued injury. Open cranial injury with brain tissue bulge, or abdominal injury with organs out, can not directly pressure bandage or will not force the organs, should be bulging or prolapsed around the tissue with gauze, towels, etc. around a “wall”, and then suitable size of clean enamel bowl or other vessels can play a protective role in covering, and then bandage fixed. When transporting, such as abdominal tenants, take supine bent knee position, so that the abdomen loose. If the cranial part, the head is fixed. (4) in dealing with larger traumatic wounds, must carry out detailed examination, can not only care about the wound surface and ignore the internal damage, head wounds combined with craniocerebral trauma, the casualties generally have abnormal mental, both sides of the pupils are not generally large; chest wounds combined with meningeal, lung cavity injury, the casualties generally have breathing difficulties; abdominal wounds combined with organ damage, the casualties generally have abdominal muscle tension, abdominal pain and other manifestations; limbs When wounds combined with fractures, there will be limb movement disorders, abnormal bone activity and other phenomena.