摘要Objective: To explore health-improving behaviors during COVID-19 pandemic and to reveal the impact of the risk perception of COVID-19 on these behaviors. Methods: We recruited a total of 510 participants for this cross-sectional study. The data were collected online using a questionnaire booklet covering a form inquiring about the participants' demographic, physical, and mental characteristics, the Generalized Anxiety Disorder-7 Scale, and the COVID-19 Perceived Risk Scale. Results: The mean age of the participants was (28.7±10.1) years, and 76.1％ were females. Of the participants, 31.8％ were overweight and obese. While 35.1％ experienced negative alterations in their dietary patterns, 23.9％ reported positive changes to their diet during the pandemic. Besides, 47.8％ reported their sleep to be negatively affected during the pandemic. While the rate of those with extended screen time was 72.5％, it was 44.3％ for the participants engaging in regular exercise. More than one-third of the participants (35.9％) had high and severe anxiety. We also found increased risk perception of COVID-19 among females, obese, those with disturbed eating and sleep quality, healthcare workers, and those with severe anxiety. Conclusions: Overall, the pandemic has appeared to have brought both positive and negative impacts on maintaining and improving eating, sleep, physical activity, and mental health.