Women constitute the major force in the frontline health sector under the unprecedented pressure of COVID-19. Nevertheless, we found that women health workers were still unrepresented and represented with biased on social media. This study used Latent Dirichlet Allocation (LDA) topic modeling to analyze posts (N = 199,110) containing the keyword “援鄂医疗队” (i.e., “aiding-Hubei medical team”) published in the first stage of COVID-19 (January 22, 2020 to June 30, 2020) on a Chinese social media, Weibo. Results revealed that health workers were discussed in relation to serving the “nation,” saving the “patients,” and fulfilling family roles. Among the 13 topics in this online discourse, topics discussing health workers in a non-gendered lens tended to emphasize their professional role. When the female identity of health workers was explicit, depictions tended to emphasize their family roles. Meanwhile, the wave-riding and hashtag-jumping/hijacking of corporates and male celebrities – in celebration of their charitable work toward the COVID-19 medical teams – also deprived women health workers of their voices and visibility. Theoretical and practical implications of women health workers’ social media underrepresentation and misrepresentation are discussed.