1, vitiligo epidermis transplantation first of all is the choice of indications, that is, you have to do surgery patients, the white spot at least half a year of rest, and no new white spots appear, the edge of the white spot has a black halo, the white spot border is very clear, surgery rather not do, and can not make the grasp is not sufficient, the future may not be satisfied with their own “works “2, the second is to be fully prepared for surgery: including equipment, technology and psychological preparation, before each surgery must check the relevant equipment, and ensure that all the equipment in the surgery is running well, and do all the emergency, alternative facilities testing, perhaps these things can not be used once in a lifetime, but must be prepared in place; before surgery in their own mind with their eyes closed the entire detailed surgery Before the surgery, we should “operate” the whole procedure in our own mind, anticipate what special circumstances may occur, and make sure that the relevant measures are in place, mentally understand where the difficulties of this case are, where the problems are most likely to occur, and how they should be eliminated. The area of the skin area should be about 120% of the area of the skin area to avoid inaccurate estimation and unsuccessful blistering during the operation or failure of individual skin trimming during the operation, which may lead to insufficient skin; 4.The edges of the white spots should be accurately marked to avoid the anesthesia needle injection. In the process of chipping, the chipping area increases or the local chipping is not achieved, resulting in the normal skin being covered by the transplanted epidermis, while part of the white spot area is not covered by the transplanted epidermis; 5, the speed of the chipping head and the type of the chipping head should have certain requirements when chipping. Local skin becomes dry and smooth, no longer easy to polish; too fast speed is easy to cut deeper, with the possibility of leaving scarring. The best is based on the performance of their own machine and their own experience, master to make grinding skin is a fine plastic film, not only the depth of grinding just reach the dermal papilla position, and uniform, grinding speed, can reach the grinding head can go through the degree of once; 6, for some fat thick parts, wrinkles, such as the waist must first use the left hand to stretch the skin, to prevent grinding head in the wrinkles difficult to 7, when transplanting, the transplanted skin pieces should be tightly linked, including between the skin pieces and the skin pieces and between the skin pieces and the edges of the grinding area, without a tight link in any one part, when the final judgment of the surgical effect is made after 3 months of transplantation, there may be white edges or lines, like defects in jade. Like a flaw in jade, it cannot be perfect, even if the patient is satisfied, it will still leave a trace of regret in his heart; 8. If the transplantation area is large and the transplantation time is more than 4 hours, attention must be paid to prevent skin infection in the transplantation area; if there are more skin pieces transplanted, it is not possible to foam at the same time, it is necessary to take the method of foaming in stages, so as to avoid a longer time after foaming which cannot be transplanted in time This will lead to jelly-like tissue fluid in the bubble, which is not conducive to skin slice trimming and may even affect melanocyte activity; 9. Patients must be allowed to maintain a comfortable posture before transplantation to avoid discomfort and change of posture during prolonged surgery, which is not conducive to surgical operation; 10. Because of the long operation time, patients must be informed to drink as little as possible before surgery to avoid going to the toilet during surgery and affecting the operation; 11. Because this surgery is very time consuming, less than two hours, more than ten hours, and extremely delicate, so you must be patient.