The shortcomings are mainly based on the arguments of the paper, such as limited literature, immature theory, preliminary research and imperfect experimental scheme.

1, objective factors.

The commonly used research methods in this paper are investigation, observation, experiment, quantitative analysis and qualitative analysis. Even without external factors, these research methods are limited. In the process of our use, these research methods are more likely to lead to biased results due to various objective factors. Limitations of sample selection: In probability sampling or random sampling, the more samples, the more accurate the result may be.

However, in the actual operation process, we may not find enough samples because of financial and other factors, which will lead to the accuracy of the final result.

Scarcity of relevant literature: When doing research, we should cite the contents of previous literature as the basis of this study, and consulting literature can provide theoretical basis for research topics. When doing qualitative research, literature is our main analysis object. However, due to the different scope of research topics, the relevant literature may be limited.

Incomplete environmental factors such as equipment and site: during the research process, environmental factors such as equipment and site will also affect the research process and even the research results, so such problems encountered in the research can be written as objective factors.

2. Subjective factors.

This part should mention the deficiencies caused by the researchers' own subjective reasons (whether direct or indirect), and put forward specific solutions to solve or reduce the limitations of this study.