The scientific literature has already shown that health information is a factor that contributes to reduce health disparities, improving the situation of vulnerable groups, such as homeless people. However, less is known about the ways that health information has been spread by social workers and related professionals to homeless people in the first moments of the COVID-19 pandemic. This work analyses some social work actions related to health information addressed to homeless people and to identify its impact during the lockdown in Barcelona. This qualitative study is based on semi-structured interviews with social workers and related professionals involved in developing interventions related to health information with homeless people in Barcelona. The data analysis is based on the communicative methodology to identify exclusionary and transformative dimensions. The results show the improvement in the health information of homeless people during the pandemic through the design and development of actions facilitated and promoted by some social workers and related professionals. The findings demonstrate the role that some social workers and related professionals have played in the improvement of health information of homeless people during the lockdown in Barcelona.