COVID-19 poses new problems for the legal system of work-related injury insurance. There are different opinions in the theoretical and practical circles as to whether Document  No.11 of the Ministry of Human Resources and Social Security belongs to a new regulation on work-related injury insurance or just reappears the existing rules in the form of policy, and whether workers’ infection with COVID-19 at work belong to work-related injury. COVID-19 is included into the workrelated injury insurance through transformation rather than creation. Covid-19 can be interpreted as a general term of accident injury so that to be included in the work-related injury insurance by means of transformation. The legal basis of Document  No.11 of the Ministry of Human Resources and Social Security is Article 50 of the Law on the Promotion of Basic Medical and Health Care and Article 11 of the Law on the Prevention and Treatment of Infectious Diseases, and the Document corresponds to the Article 14(7) of the Regulation on Work-Related Injury Insurance which states that “other circumstances as prescribed in laws and administrative regulations.” Workers who areinfected with COVID-19 at work need to prove job execution and occupational causation, and Article 14(3) and Article 14(5) of the Regulation on Work-Related Injury Insurance can be applied to it.