Value perception has gained increasing attention from service management. However, seldom researchers explore the value perception of tourists from the value co-creation behavior perspective in sharing economy environment. Therefore, in this study, we use text mining methods to measure the value co-creation behavior of tourists in the sharing economy and use an econometric model to explore the effects of the value co-creation behavior of tourists on value perception from a co-creation behavior perspective. In our research, we found the value co-creation behavior of tourists has a significant effect on their value perception. In particular, under the amplification effect of the online platform, the personal interaction and advocacy dimensions have a positive significant effect on value perception, while the feedback, information sharing, tolerance, and information-seeking dimensions have a negative effect on value perception. Our study contributes to the research of value co-creation in sharing economy and formulates tourism marketing strategies.