With the development of big data technology,the Internet has penetrated into every walk of life. Crowdsourcing platform service mode,a self-service mode with mobile Internet,has come into being. It accurately connects products with consumers and manufactures. Compared with traditional market research method,this mode is more time-effective. It not only decreases vestigation period but also reduces cost,which is conducive to data collection and guarantees the authenticity of collected data. This essay makes data analyses on the pricing of crowdsourcing tasks. Principal component analysis,multiple linear regression model as well as multiple logistic linear regression model are utilized to analyze the relevant tasks and to reprice so as to complete the relevant tasks with minimum cost as far as possible.