<p>There exist a few channel conflicts and online reviews and offline in-sale services deeply affect the shopping behavior of consumers and the profits of supply chain. To well analyse the influences of online reviews and offline in-sale services on supply chain and deal with channel conflicts, we establish some basic models involving online reviews and in-sale services based on market demand theory and Stackelberg game theory, and exploit them to discuss the optimal decisions under the different decision. And then, we construct a two-part tariff contract. Finally, a number case verifies the validity of the proposed model. The results show that (1) Appropriate investment in online reviews and in-sale services can enhance the overall profits of the supply chain. (2) Compared with in-sale services, online reviews have a more significant impact on supply chain pricing strategies. (3) The introduced coordination mechanism can effectively resolve channel conflicts by reducing wholesale prices and introducing transfer fees.</p>