The 911 incident marked the development of international terrorism into a new phase of catastrophic terrorism and aroused the concern of the international community about the possible future use of nuclear-weapon terrorist attacks. In the September 11 incident, terrorists did not use nuclear weapons, but their irrational behavior significantly increased the international community's serious recognition of the threat of nuclear weapons proliferation and its integration with terrorism and began to notice how to deal with the use of nuclear weapons as a type of terrorism The It is the consensus of the international community to further integrate global nuclear safety resources and actions, strengthen international cooperation and give long-term strategic planning to the international nuclear safety process in order to respond effectively to potential nuclear terrorism risks. This paper is intended to be a comprehensive discussion of the current issue of growing concern.