With the change of environment, it is difficult to adapt to the competition in the market with the development strategy which is only centred on leadership. Therefore, how to enhance subordinates' motivation and stimulate their followership is a question for managers to ponder. Through the social exchange theory, this study aims to explore how does a humble leader influence subordinates' followership? This paper takes the working employees of Hangzhou Internet as the research object, uses the questionnaire survey method, and recovers 471 valid questionnaires. The conclusions of the study are: (1) humble leaders have a positive influence on subordinates' followership, while psychological security plays a partly mediating role between them; (2) leader-member exchange can positively modulate the influence relationship between humble leaders and subordinates' followership. This study enriches the research situation of humble leadership and subordinate followership, and provides some management suggestions for enterprises.