Populism is a trend in politics, but in terms of rigorous academic definitions, is there populism in Taiwan? The Internet is a hotbed of populism. This study analyzes big data on the Internet to understand the situation regarding populism in Taiwan. This research proposes the keywords and four aspects of populism on the basis of theory, supplemented by the populism keywords that actually appear on the Internet, and proposes keywords to observe the measurement of online populism, which is an important contribution of this paper to research on populism.