Objective To investigate a simple effective method of hair transplantation, and to explore tech-niques to increase the density and viability of the transplanted. Methods Under a low temperature environment,21 cases were treated with the knife needle technique. 13 cases were used microsugical technique. Results Transplanted hair in each case grew well,of all the 21 patients treated, 18 cases were followed up for a period of time from 5 to 18 months, the transplanted hair covered the bald and scar area well-proportionately with a appearance close to nature. Conclusion The above-mentioned technique is a simple, fast and effective method with less bleeding and injury, and may be used in primary hospital. Combined use of microsugical technique could help to increase the viability and den-airy of the transplanted hairs.

Objective To observe clinical effects in treatment of skin extensive laceration.In order to find the best method to treat scrious skin avulsion.Methods In 137 cases,we adopt five ways to treat serious skin avulsion.Results The total effective rate was 94.2%,the out-look and function in injury areas got satisfied recovery after treating.Conclusion The skill of subcutaneous vessel network thin flap is one of the best methods to treat scrious skin avulsion.