With the booming growth of social media, product evaluation by key opinion leader (KOL) plays an increasingly important role in purchasing decisions of consumers. In particular, consumers may strategically delay purchases in anticipation of the KOL’s evaluation, which may be influenced by firms through social intervention, especially for the product that is first introduced with uncertain quality. This paper examines how social intervention affects consumer learning and in turn the strategic interaction between a monopolistic firm and strategic consumers in a two-period model. Taking into account discount factors of the firm and consumers, we find that the firm always invests a suitable effort, instead of overexerting, to intervene in the KOL’s evaluation, thereby, influencing product word-of-mouth (WOM). Nonetheless, social intervention may not invariably benefit the firm, even harm him in some cases. As for pricing policies, though commitment pricing has been deemed an optimal way to respond to strategic consumer behavior in some previous studies, we show that it is suboptimal relative to responsive pricing once profit discount is considered in the absence of social intervention. Driven by social intervention, responsive pricing and commitment pricing have their own strength. The firm favors the former if his preferred sales period and strategic consumers’ preferred purchase period are incompatible, otherwise, the latter is adopted. Moreover, the incremental value of social intervention in the latter dominates that in the former, as such value relies more on intervention effort.