1, Health: The playground is the main place for primary and secondary school students to carry out sports activities, which helps them to exercise and improve their physical fitness. Through various sports on the playground, primary and secondary school students can enhance their physical fitness, improve their immunity and reduce the occurrence of diseases.

2. Mental health: The playground is not only a place for physical exercise, but also a place for mental health education. By participating in sports, primary and secondary school students can cultivate qualities such as tenacity, perseverance and unity, and at the same time improve their self-confidence and self-esteem.

3. Social skills: On the playground, primary and secondary school students can interact with other students and cultivate their social skills. Through cooperation, communication and interaction, they can learn how to get along with others and improve their interpersonal skills.

4. Enhance discipline: In the playground, primary and secondary school students need to abide by various rules and disciplines, which helps to cultivate their discipline. By observing rules and disciplines, they can learn how to regulate their behavior and improve their self-discipline ability.

5. Cultivate a sense of collective honor: On the playground, primary and secondary school students often need to participate in competitions on behalf of classes or schools, which helps to cultivate their sense of collective honor. By winning the honor for the class or school, they will cherish the collective honor more and are willing to fight for the collective interests.

Characteristics of spectators on the sports field:

1, enthusiasm: The audience on the sports field is usually very enthusiastic. They cheered for the athletes and cheered for the wonderful moment of the game. This kind of enthusiasm can inspire athletes' fighting spirit and make them play a better level.

2. Team spirit: In the sports field, the audience usually support their own team, and they hope their team can win. This team spirit can promote the interaction and singing between the audience and athletes, and enhance the team cohesion and sense of belonging.

3. Pay attention to the sense of ceremony: The audience in the sports field usually pay great attention to the sense of ceremony, and they will make some preparations before the game, such as wearing team uniforms and raising flags. This sense of ceremony can make the audience more involved in the game and enhance the sense of solemnity and honor of the game.

4, like the game: the audience on the sports field usually like competitive games, which can make them feel the tension and excitement of the game. At the same time, they also like to watch wonderful performances and skill demonstrations, which can make them feel the charm of sports.

5. Pursuing a healthy lifestyle: The audience in the sports field usually pay attention to a healthy lifestyle, and they hope to stimulate their enthusiasm for participating in sports by watching the game. This healthy lifestyle can promote the development of national fitness and improve the health level of the public.