Upstream:

1. Policy support: The government formulates relevant policies and regulations to encourage and support the development of research travel. For example, China's Ministry of Education and other departments issued "Guiding Opinions on Deepening Study Travel in Primary and Secondary Schools", which clarified the objectives, contents, organization, implementation and evaluation mechanism of study travel and provided policy guarantee for study travel.

2. Curriculum development: Education departments and professional institutions are responsible for developing research travel courses suitable for different age groups and covering various topics. The course content should pay attention to moral education, subject accomplishment and practical ability, and pay attention to the cultivation of students' core accomplishment.

3. Travel agency services: Professional travel agencies are responsible for organizing and receiving research travel teams and providing safe and professional services. Including itinerary planning, transportation, accommodation, catering, etc. To ensure the smooth progress of the study tour.

Midstream:

1. school organization: the school is responsible for organizing teachers and students to participate in research trips, and selecting appropriate research topics and destinations in combination with the syllabus and students' interests.

2. Teachers: Teachers are guides and counselors of study tours, and are responsible for guiding students to carry out practical activities to ensure the safety and educational effect of study tours.

3. Parents' cooperation: Parents need to cooperate with the school to understand the purpose and arrangement of study tour and provide necessary support and care for students.

Downstream:

1. Destination resources: including natural landscapes, historical and cultural sites, science and technology venues, etc. It provides a rich practice place for study tour.

2. Cooperation between enterprises: Enterprises participate in research travel projects, providing students with opportunities such as internships, visits and inspections, and enhancing students' practical ability and innovative consciousness.

3. Social evaluation: evaluate the effect of study tour, including student growth, teaching quality and satisfaction, so as to promote the sustainable development of study tour.

The above elements constitute the upper, middle and lower reaches of research travel, and all links cooperate with each other to jointly promote the development of research travel.