Performing military service obligations and consciously accepting national defense education are sacred obligations entrusted to college students by law. College students are the representatives of outstanding young people of the Chinese nation, and they are the important reserve forces to consolidate China's national defense, resist foreign aggression, defend the independence of the motherland and safeguard national sovereignty and territorial integrity. Therefore, it is the unshirkable responsibility of college students to perform military service obligations in accordance with the law, receive military training during school, and learn and master basic military theoretical knowledge and skills. Key words: national defense military courses, military training and military technology are the call of the times. Historical experience tells us that "the country is undefended, and the people can't live", so it is necessary to strengthen the national defense education of the whole people and enhance the national defense concept. The humiliating history of China in modern times, which was full of blood and tears, will never be forgotten by the people of China. A country must have strong economic strength and national defense to stand on its own feet among the nations of the world. In the early 1990s, with the disintegration of the Soviet Union, the cold war situation in which the Soviet Union and the United States competed for hegemony in the world ended. However, we should be soberly aware that hegemonism and power politics still exist, local wars and regional wars continue, and the world is not at peace. The United States-led NATO changed from a defensive organization to an offensive military organization, and intervened in countries that did not listen to it without joint authorization, posing a major threat to world peace. The United States has also made a big fuss about the issue of Taiwan Province Province and manipulated Japan to jointly formulate the so-called theater missile defense system in an attempt to bring Taiwan Province Province of China into the defense system. Offering military courses can cultivate high-quality national defense reserve forces and conscientiously implement the party's educational policy, that is, to train builders and successors of the socialist cause with all-round development in morality, intelligence and physique, and its core is to pay attention to cultivating the all-round quality of talents. First of all, we should cultivate students' firm and correct political orientation and good moral quality. Military curriculum is a rational understanding of national defense and military affairs, and it is a theoretical and practical education with patriotism as the core. In the moral sense; Defending national security is the highest social morality of every citizen. Therefore, national defense education and "two courses" education have the same effect and complement each other. Secondly, on the basis of imparting knowledge, it is an important task to strengthen the ability training of college students. By teaching military science and technology, military theory course enables college students to understand the gap between China and developed countries in military technology, thus stimulating students to delve into professional knowledge, actively participate in practice and strive to improve their ability to solve problems. Third, the development of science and technology and market economy. Make the talent training mode develop in the direction of large caliber and wide application, rather than a career-oriented education. Therefore, the trained talents should serve not only economic construction, but also national defense construction, and train a large number of high-quality reserve troops and reserve officers for the country. Military courses are an important part of higher education. As an important part of higher education and a special field of social activities, military courses have comprehensive quality training and educational functions that cannot be replaced by other disciplines and educational methods. It is not only an important measure to adapt to the preparation for military struggle in the new period and strengthen the construction of reserve talents, but also an active exploration to strengthen the national defense concept of contemporary college students and improve their comprehensive quality. In recent years, we have made some attempts to do a good job in military training teaching for college students, and achieved certain results, which also triggered a lot of thinking from practice. First, we should re-examine the great strategic significance of doing a good job in military training teaching for college students from the height of the new people's war. Although modern war is a high-tech war, the fundamental factor that determines the outcome of the war is people, who are armed with high technology. Looking at the Gulf War and the Iraq War, it is not so much that the US military defeated its opponents with cutting-edge weapons and equipment, but rather that the US military defeated its opponents with cutting-edge talents with absolute superiority. It is a soldier armed with modern knowledge and advanced ideas, a soldier with high IQ hiding behind high-tech weapons, and defeated a soldier with sacrifice spirit but no scientific and technological quality. College students in China have always had a glorious tradition of patriotism. Whenever the country needs it, college students will stand at the forefront of the times, stand forward and defend the peace and security of the country with their youthful blood. Contemporary college students have strong patriotic enthusiasm and ambition to serve the country, which contains huge talent resources. At ordinary times, we should do a good job in military training and education of college students, further strengthen their ideological quality of dedication to the country and improve their ability to operate high-tech equipment. In case of war, when the country needs it, they are extremely considerable strategic reserve talents, which can ensure that we can defeat any of the most powerful opponents. Even in peacetime, we should fully tap and make good use of college students as a treasure house of talents, so that they can master the necessary military skills on campus, and they can directly recruit officers or noncommissioned officers after graduation. This can reduce the training cost of soldiers, promote the improvement of the overall quality of military groups, accelerate the pace of information construction of our army, improve their ability to win high-tech wars, and provide sustained and powerful talent support. Second, from the perspective of ensuring the positive, healthy and all-round development of contemporary college students, we should fully understand the practical necessity of doing a good job in military teaching for college students. Contemporary college students not only have obvious characteristics such as high cultural level, sharp thinking, strong sense of pioneering and innovation, strong demand for democratic and equal participation, but also have their own shortcomings such as shallow life experience, little practical experience and insufficient spirit of hardship. Many students also hope that while learning theoretical knowledge, they can exercise their perseverance, enhance their physique and learn how to be a man. Carrying out military training teaching for college students and introducing some militarized work, study and life patterns can effectively solve the shortage of military training talents in colleges and universities and promote the overall improvement of college students' comprehensive quality. For example, through queue training, cultivate students' sense of discipline and hard-working spirit, and form a good style of being resolute and resolute and forbidding; Through the study of military theory, students can master modern military theory, stand at the forefront of world military theory, analyze and understand the development status and future of our army construction, and gradually lay a solid ideological foundation for them to serve the country from the army; By regularly arranging college students to visit military camps, organizing college students to lead a militarized life by imitating combat classes, systematically letting students take turns to be company commanders, platoon leaders and squad leaders of battalion commanders, empowering them, clarifying their responsibilities, learning from each other and commenting regularly, we can further exercise and improve college students' leadership ability and enhance their sense of collectivism and mutual assistance. According to our practice, college students are very enthusiastic about carrying out military teaching activities and participating in them. After four years of military training on campus, their comprehensive quality has been greatly improved. How many people were assigned to the army and directly appointed as officers after graduation was fully affirmed by the army, parents and college students. Third, we should try our best to fully tap the inner enthusiasm of college students. To do a good job in military training teaching for college students, only the enthusiasm of schools and troops is not enough. The key is to arouse students' enthusiasm, develop students' intrinsic motivation and give full play to their intelligence. First of all, the focus of military training teaching should be on cultivating students to become talents. Give students more education in this field, make them realize the practical significance of carrying out military training teaching for their healthy growth, the important role of broadening their knowledge, the long-term positive impact on their future lives, and constantly enhance their sense of participation and responsibility. In the design of activities, students should be involved, the goal should be moderate, and students should be able to jump and jump, and the method should be proper, which not only strictly trains, but also embodies the people-oriented requirements. Secondly, we should organically combine military training with normal school teaching, so as to combine training with teaching, dynamic and static, strong and weak, and arts and sciences. It is necessary to strengthen regular coordination and contact with the school student union, pay attention to reporting relevant information, adjust the contradiction between work and study in time, form a joint force to grasp military training teaching, ensure mutual complementarity and prevent collisions. Thirdly, we should run the competition through the whole activity. As a youth group, it is their nature to be brave in challenges and be competitive. The practice of military work also shows that to do a good job, we must carry out various, colorful, flexible and effective activities to catch up with learning and help others. The ancients said that it is a truth repeatedly proved by history to worry about the country and the people and escape from death. Although peace and development are the themes of today's era, the world we are facing is very restless, the trend of world multipolarization is developing in twists and turns, the international situation is complicated, hegemonism and power politics still exist and have new manifestations, and China's security is still facing severe threats and challenges. All these require us to strengthen our sense of hardship and national security through extensive and in-depth national defense education, and put safeguarding national sovereignty and security in a more prominent strategic position. In order to make college students understand military knowledge, understand the laws of war and predict the characteristics of future wars, under the premise of implementing the principle of fewer but better, learning military theory must be regarded as an important content of college students' national defense education.