Youth health is the key to youth development and an important part of the national strategy of “Healthy China”. This report uses the survey data of “Chinese College Students Tracking Survey （PSCUS）” in 2018，2019 and 2020 to analyze the basic health status，health behavior and the impact of Covid-19 on college students’ health. The study found that the self-rated health status of college students is good，but the measurement of the scale shows that the physical symptoms and organ function of college students are general，nearly 30% of college students have a higher risk of mental illness；in addition，college students pay attention to physical exercise，but do not eat breakfast. Behavior such as smoke，drink，stay-up late and other behaviors also harm the health of college students. The impact of the Covid-19 epidemic on college students’ physical and mental health needs to be paid attention to. The data show that the overall health status of college students is good，but there are still some college students whose sleep and mental health are affected by the outbreak of the Covid-19. College students’ health is an important basis to ensure their study and life. College physical education should give full attention to the function of guidance and education，advocate healthy lifestyle among college students and cultivate the habit of lifelong exercise.