This article aimed to focus on the disputes of gene-editing of human embryos，analyze the reasons and make a reasonable defense of the controversies. In order to find out the solution of the problem，the author researched the deep reasons behind the ethical disputes by collecting the papers，identifying the documents，and organizing the monographs. As far as the author concerned，the use of gene technologies to treat all kinds of genetic diseases can be defended ethically. However，the reaction of technology to mankind should be reduced to a minimum while developing the new technology. Facing the emerging technology，the equal dialogues should be proposed finally. A moral consensus can be reached through the way of dialogue. The relevant legal policies need to be formulated on the basis of moral consensus. Scientists should carry out the researches actively under the guidance of legal policy.