Based on the objective data of online employee reviews since 2013, especially those after 2016, data of 95,693 online employees reviews on job satisfaction are collected by the software Python. This paper analyzes job satisfaction of employees in the Internet industry and main influencing factors from 12 dimensions including skill training, promotion, salary performance, benefits and so on. The research shows that, compared with other industries, the job satisfaction of employees in the Internet industry is higher, raking second in 16 common industries. As to 12 dimensions, satisfaction on cultural atmosphere, skill training and company condition ranks high while that on intensity of work, salary performance and employee structure ranks low. Accordingly, it is recommended that Internet companies set up reasonable working content, standardize working hours, design a scientific salary system to reduce turnover rate of core employees.