National Defense Education Day in China is the third Saturday in September every year. This is the date determined according to the Decision of NPC Standing Committee on Establishing National Defense Education Day. National Defense Education Day is a theme activity day designated by the state to carry out large-scale national defense education for all. One of the forms of mass national defense education activities.

The Decision of NPC Standing Committee on Establishing National Defense Education Day was adopted at the 23rd meeting of the Ninth NPC Standing Committee on August 3rd, 2006. In order to popularize national defense education and enhance the national defense concept of the whole people, the 23rd meeting of the 9th NPC Standing Committee decided that the third Saturday of September is the National Defense Education Day every year.