Based on the proximal-distal framework and combined with the expectancy theory, a theoretical model has thus been constructed of the continuance intention of the crowdworkers on the crowdsourcing platform, followed by a collection of the data of crowdworkers on the mainstream crowdsourcing platform by conducting a questionnaire survey, as well as an empirical testing by using the structural equation model (SEM). The research results show that the perceived effectiveness of the crowdsourcing platform’s institutional mechanism has a significantly positive impact on crowdworkers’ expectancy (i.e., perceived self-efficacy and trust in the crowdsourcers); meanwhile the perceived effectiveness of crowdsourcing platform tool support exerts a significant positive impact on crowdworkers’ expectancy as well; moreover, trust in the crowdsourcers positively affects the continuance intention of the crowdworkers, while perceived self-efficacy has a marginally significant impact on the continuance intention on the part of the crowdsourcers.