Summary: Gene therapy is a kind of new techology to fight with disease. The method of Gene therapy is change the gene throughout arrangement and reorganization genes. According to the research, gene is the most basic part of our body. So gene therapy is effective to almost disease. Such as cancer, everyone know that cancer is one of the most terrible diseases. People try to find a way to comquer this disease for a long time. But I have to be honest to say we nearly don’t have any measures of this disease. Amost measures are not effective enough until gene therapy was applied. Nowadays along with the development of science and technology gene therapy was used more and more spreadly. Especially Nano-technology and gene therapy that combined into a new method for treating cancer.