In accordance with the views of bioethics,science and technology from the long-term interests of the benefit of mankind as a whole.It must follow the "good,not harm,independent and impartial" The four internationally recognized ethical principles."Victoria" successful cloning of sheep,after 200 failures,there were abnormal mortality or the sheep.The cloning of human beings more complex,it will undoubtedly encounter more failures,if creating an unhealthy,abnormal or Duanshou who will be a violation of human rights.