Abstract China has begun to pay close attention to information operation since 1985, in particular, after the Persian Gulf War in 1991. From the very high official level downwards, all military agencies of China have devoted to research on information operation. Generally speaking, the military experts of China agree that Information Operation is a highly integrated warfare, and that all military actions that can disrupt the enemy's capability of controlling information fall into the category of Information Operation. This is a new wave of military revolution which is based on information technology. Militaries of different countries are embarking on the revolution. The foundation of the information industry, the progress of the military theories, and the attitude towards military revolution will decide the order in which different nations completing the revolution. This thesis defines the information operation very similar to the definition adopted by the U.S. Army, and focuses on information operation at the national level. The main reason of China's emphasis on information operation is to c China believes that a small-scaled, localized war with the U.S. is unavoidable, and that the U.S. will either directly or indirectly intervene in any military conflict between China and Taiwan. China would like to disrupt the control and command system of the U.S. army and to stabilize balance the moderate and conservative factions within the party. Moreover, China believes that information operation has the advantages of launching a swift and precise attack and avoiding mass destruction on Taiwan's infrastructure and high-tech industry. It also has the benefits of low intensity, low loss, high efficiency, fast attack, and fast victory. In summary, information operation is regarded by China as a kind of warfare that is in conformance both with the ancient war theory and the modern economic demand. In the face of China's development on information operation, Taiwan should think bout how to make best use of its advantages to confront China's threats, and to gain a military edge over China. Thesis reaches nine points in conclusion: 1) China has placed more attention on offensive information operation; 2) China supports asymmetrical warfare; 3) China's rapid development in internet technology is increasing its capability in information operation; 4) China has also shown emphasis and determination in the area of Information Security; 5) China will aggressively push for the establishment of legal system for information security, and raise its defensive capability on information operation; 6) China will actively train skilled people to run information operation; 7) China's emphasis on conduct information operation during military exercises shows its determination to use it during a war; 8) China's current network military power is still inferior to that of the U.S.; 9) Taiwan has to look at China's development on Information Operation objectively.