The e-commerce gives work and the life of people to bring the new commerce moment with facilitating, but also is being faced with jumbo challenge. Because an important technology characteristic of e-commerce is using IT's technology to come to transmit and deals with commerce information. Therefore in fact computer network safety is closed with commercial affairs business safety, they couldn’t be divided, both supplement and complement each other, and are integral. Not having computer network safety as the foundation, commercial affairs business safety is just as the castles in the air, and does not have no way to talk. The safety is one of the huge challenges that the e-commerce is faced with, and it becomes hindrance follow-on bottle neck of e-commerce. The commercial affairs businesses all will not be carried on by way of the cross-domain communication environment of a danger in any individual, enterprise or commerce organization, and can lead to so the various business information to be leaked or destroys, thus create the jumbo interest to lose. The safety is the important guarantee of e-commerce life-force, and becomes again at the same time restricting one of follow-on bottle of neck factor e-commerce at present.