With the rapid development of aerospace technology, space has become a new space accessible to humans, following land, sea, and air. Looking at the world, the space field has become a new battlefield for strategic competition among major powers, and space strength has become a decisive force in shaping the international competitive landscape and an important indicator for measuring comprehensive national strength. Countries or alliances such as the United States, NATO, and the European Union view space as a military competitive high ground and a new type of combat area. They continuously promote and improve their space strategy, continuously promote the development of cutting-edge space technology, research and deploy space equipment, and attempt to seek a dominant position in the space field. From a strategic perspective, it aims to maintain space security interests and maintain a competitive advantage. The recent outbreak of local conflicts reflects the complex and severe national security environment, which is influenced by multiple factors. The competition for space interests will become increasingly prominent, and the importance of space security will become more prominent. It is even impossible to rule out the possibility of direct conflicts in space in the future. Space security has become an important component of military security, and defending space security and interests has gradually become a strategic goal of countries or alliances such as the United States and the European Union. The Biden administration of the United States continues its strategic inertia of pursuing an "absolute advantage" in the space field, emphasizing that the United States will maintain its position as a world leader in space, and regards space as an important strategic area related to national security and development. One of the main directions of the UK's National Space Strategy's national vision in the field of space is to defend UK space interests, shape the space environment, and use space to address domestic and international challenges. In November 2023, the European Council approved the "EU Space Security and Defense Strategy", indicating that EU member states have reached a consensus on maintaining space security and protecting space assets, and are deeply aware of the important role of space in military security. In the new version of the Military Doctrine, Russia emphasizes that the primary goal of developing space strategy is to prioritize national security interests, attach importance to independent development in the space field, and emphasize the need to maintain Russia's leading position in space in multiple official documents. From a strategic perspective, it aims to strengthen space combat capabilities and highlight military civilian compatibility. Due to the development and changes in the form of war, space has become an important area of the future battlefield. In order to achieve strategic goals and address complex space security challenges, countries or alliances such as the United States and Japan believe that developing space capabilities, especially space combat capabilities, has become a priority option, and the importance of safeguarding national security has significantly increased. At the same time, considering the development of the space economy and the advancement of space military technology, the policy of military civilian compatibility and common development is widely adopted. The continuous development of civil space technology has become an undeniable reality for countries to formulate space military strategies. The 2022 version of the US Department of Defense's Space Policy Directive states that space is a "priority area for national military forces" to resist "hostile behavior", clearly promoting the militarization and weaponization of space. The US government and military are actively integrating commercial space resources, utilizing new commercial space capabilities and services represented by SpaceX to meet national security needs, filling intelligence gaps and weaknesses, helping to identify potential space threats, and enabling the military to focus more on combat. The UK continues to introduce strategic policies and regulations, improving top-level facilities