In work and life, you need to use your hands all the time, and it is inevitable that you will bump into various hand trauma. Here I will give you the three-step treatment principle for hand trauma: Step 1: Learn to stop bleeding Local pressure bandaging is the easiest and most effective way to stop bleeding in hand trauma. Even for larger arterial injuries, pressure bandaging can generally achieve the purpose of stopping bleeding. In real life, people mostly use wrist compression or rubber tube, wire or cloth bandage to stop bleeding from traumatic hand injury. The second part, wound dressing with sterile dressing or clean cotton products pressure wrapped around the wound will be able to stop bleeding, do not use some soot, soot, anti-inflammatory powder, Chinese medicine powder and other miscellaneous external wound, these powders are not necessarily sterile, but easy to cause infection of the wound. There is also a wrong practice is to cover the wound directly with toilet paper, wound bleeding so that the toilet paper melted into pulp, paste in the wound, bringing difficulties to the wound cleaning. Some inferior toilet paper, very unhygienic, the presence of a large number of pathogenic bacteria, it is easy to cause infection. The third part, local fixation transfer process, regardless of whether the injured hand has obvious fractures, should be properly fixed to reduce the patient’s pain and avoid further aggravation of tissue damage, if not properly fixed, let it move freely can make the original undamaged vascular nerve damage. The fixation equipment can be made from local materials, such as wood, bamboo, cardboard, etc. The fixation range should reach above the wrist joint. In particular, it should be noted that with the development of handicraft industry, the lack of attention in work has caused many broken fingers. Improper preservation of the severed finger (limb) can cause failure of the surgery. Many patients visit the clinic with either the finger wrapped in paper or soaked in alcohol, which is incorrect. The correct method is to wrap the severed finger (limb) in sterile gauze or with a clean cloth towel and seal the outside with plastic wrap. Be sure to seal it well, and then put it in an appropriate container, surrounded by ice, such as no ice, put popsicles, ice-cream is okay, so that the broken finger (limb) is preserved in 0-4 ℃ environment, seize the time and come to the hospital as soon as possible.