Since the 21st century, the human economy has developed high speed, the people live have had the change which changes with each new day, specially computer's application and popularization to economical and social life each domain. Along with the computer in the social life each domain's widespread utilization, the computer virus attack and the guard technology unceasingly is also developing, has brought the huge destruction and the latent threat for the computer system. It is reported that various countries suffer the computer virus infection and the attack event are counted by the 100 million, has disturbed the normal human society life seriously, has brought the huge latent threat and the destruction for the computer network and the system. Along with the computer, the network utilization popularizes unceasingly, thoroughly, will guard against the computer virus to receive various countries to take seriously more and more. In order to ensure system's security and unimpeded, therefore, studies the computer virus the measure to be imminent. This article obtains from computer's characteristic, to come the preliminary discussion to cope with the computer virus the method and the measure. 计算机Computer,、病毒 virus系统安全system safety