Turnover intention refers to the possibility of an individual changing his or her job within a certain period of time. Resignation can be divided into active resignation and passive resignation. Passive resignation is mainly due to resignation, retirement, work injury and other reasons. Generally speaking, the passive resignation of employees is conducive to the development of the enterprise, while the active resignation is not conducive to the business development of the enterprise. Employee turnover can lead to low morale and loss of human capital investment. As a result, voluntary turnover often becomes the focus of researchers. Considering the impact of turnover on employees'life, family and career, employees usually choose to leave voluntarily only after careful consideration, so the employees before formal departure will show more or less the tendency to leave 1.