1. Compared with other research methods, job analysis method is easier to eliminate the information distortion caused by preschool children's preventive psychology because of its indirect characteristics. Analyze their methods, skills and abilities through the quality of their finished works. Because the process of completing the work mostly requires the participation of certain methods and abilities.

2. The advantage of job analysis method is strong comparability. The same theme, the works of several preschool children are put together, and the level can be seen by comparison. Moreover, preschool children usually don't know the teacher's intention to complete the work when conducting research, and their attention is focused on the process of completing the work. This can achieve a good effect of reducing the pre-school children's preventive psychology and obtaining real information. Disadvantages: it requires extremely high professional knowledge and belongs to the content of psychology.