An estimated 164 million people are migrant workers and they are often those with low-income who are subject to high risk of virus transmission due to environmental and occupational exposures. COVID-19 pandemic is reported to exacerbate existing vulnerabilities of these marginalized groups, and the lack of self-care can lead to spread of the virus. This study aims to shed light on how migrant low-income workers seek health information and how they deal with related challenges. The exploration extended to the existing barriers of seeking health information, strategies of overcoming the barriers during COVID-19. We also examines workers’ preferred information sources and types of content with the theoretical concept of health literacy to understand the development of health competencies. We conducted an exploratory qualitative study using semi structured interviews to study the experiences of the migrant Thai low-income workers in Taiwan. A total of 13 Thai migrant workers participated in the study, which 5 workers are undocumented workers. The interview data was analyzed with thematic analysis approach. The results showed that migrant workers developed distinct health information behaviors and improved various types of health competencies amid COVID-19 pandemic. Although the key barriers to health literacy remain, we found that participants seek health information more proactively and sophisticatedly to reduce their perceived risks. Improved health competencies is demonstrated by the enhanced ability to access, understand and interpret health information. However, there are still improvements to be made to support the ability of processing jargon information and applying local policy. This study acknowledges and addresses the needs of the vulnerable migrant workers in the society. Our findings would guide the authority and technological interventions to respond to their health information needs with appropriate tools to supporting migrants navigating the healthcare system in the host country.