Abstract：Product reviews and scores have a direct impact on consumers' buying behavior. However, there are inconsistency between reviews and scores. Based on the linguistic Appraisal Theory from the perspective of engagement in the theory-construction index system, this article puts forward online product reviews-scores correction method. The method is applied to verify and correct the real product reviews data. The result shows that this method cannot only explain the differences between reviews and scores and reflect the real scores of the products, but also help consumers make better decisions and improve the network evaluation mechanisms.