Injection fear is widespread in the population, which can cause patients to tolerate or avoid injection, reduce treatment compliance, and increase the burden of healthcare. Choosing appropriate injection fear assessment tools in clinical practice is helpful to understand the degree, psychological characteristics and influencing factors of individual injection fear. In this paper, the contents, characteristics and application methods of fear of injection assessment tools at home and abroad are reviewed, in order to provide reference for the application and development of fear of injection assessment tools for medical staff.