Abstract: Studying on whether the improvement of copyright protection can promote the development of cultural industry is very important for the development of China's software industry. Using multiple linear regression models as a tool and the intensity of copyright protection as a premise, the relationship between the intensity of copyright protection and software industry is empirical analyzed on the relevant data of the 2000-2015 year software industry in China. The results show that the intensity of copyright protection in China has increased year by year along the 2000-2015 years. Despite other factors, the intensity of copyright protection is positively related to the development of software industry, and the correlation is significant. But taking 7 factors into consideration, such as the number of employees, the export of the software industry, the popularity of the network and the number of pirated software, the date shows that the intensity of copyright protection is negatively related to the development of the software industry, and the correlation is significant. The fixed assets investment and the positive software revenue are positively related to the development of the software industry, and there is no significant difference between the other factors and the development of the software industry. Therefore, we should not blindly pursue the high copyright protection intensity, but should strengthen the copyright protection "according to local conditions", and improve the awareness of the investment in fixed assets and the consumption of the positive software of the citizen so as to promote the development of the software industry.