Instructional design refers to the strategies adopted by teachers in teaching process, teaching content, teaching organization, teaching methods and teaching means in order to achieve teaching objectives, according to the principles of educational teaching art and students' cognitive structure.

1. process is a system, which includes learning methods, teachers, resources, learning methods, conditions, scenarios and other elements. Instructional design is to create such a system and solve problems in teaching with systematic scientific methods.

2. Instructional design is to determine learners' needs and problems to be solved in teaching according to learners' learning objectives, and put forward methods and steps to meet learners' needs and solve problems.