The report of the 20th National Congress of the CPC pointed out that we must unswervingly implement the overall national security concept and put the maintenance of national security throughout all aspects of the work of the Party and the country. This requires that the public security organs must focus on the new situation, new tasks and new requirements of the public security law enforcement work in the new era, and fully improve the law enforcement ability of the public security team by cultivating high-quality “blue army” teams, carrying out effective simulated police situation drills, and carrying out the original mission with the practical action of ensuring security and stability. This study summarizes the quality composition of the “blue army” as a special group in the simulated police situation training and on-site law enforcement security of the public security organs, explores the selection path of the “blue army”, and analyzes the practical problems and deficiencies in the cultivation and professional construction of the “blue army” in the current simulated police situation training of the public security organs, based on which, Explore the regularization and professionalization comprehensive training mechanism of the “blue army” team in the field law enforcement of simulated police situation by the public security organs, effectively promote the high-quality law enforcement of the front-line civilian police, vigorously improve the on-site law enforcement safety ability and emergency command and disposal ability, strive to forge a strong public security force with excellent law enforcement quality, deeply implement the overall national security concept, ensure high-quality development with highlevel security, and ensure a new development pattern with a new security pattern, To create a safe and stable political and social environment for realizing the “two centenary” great goals and comprehensively promoting the great rejuvenation of the Chinese nation.