The difficulty of making a doctoral thesis scale can be analyzed from the following aspects. First of all, the difficulty of developing the scale of doctoral dissertations is related to the complexity of research topics and research methods. Generally speaking, if you choose a complex research topic and use complex research methods, it may be more difficult to make a scale. Secondly, the preparation of the scale needs to learn from the previous research results and revise or adapt the existing scale. It may be difficult to develop a brand-new scale. In addition, effective reliability and validity analysis is needed to ensure the reliability and validity of the scale. Finally, the difficulty of developing the doctoral thesis scale is also related to the research background and experience of the researchers. If researchers have rich knowledge and experience in scale development, the difficulty of scale development may be relatively low. To sum up, the difficulty of developing doctoral dissertation scale is the result of many factors, which need to be evaluated in combination with specific conditions.