Abstract: Objective To evaluate the college students’ cognition and concern level to PM2.5, and to provide scientific basis for the guidance of targeted intervening measures. Methods Investigations to 92 students from medical and nonmedical majors in a comprehensive university in Baoding city were conducted with Lot quality assurance sampling(LQAS) and focus group discussion. Results The rates of respondents’ average awareness to PM2.5 are respectively 61.11%and 56.67%, the rate of medical students was slightly higher than the nonmedical ones. Qualitative analysis indicated that most respondents seldom payed attention on this issue initiatively, they knew little and had many misunderstanding about the source, danger and protection of PM2.5. Conclusion College students’ knowledge of PM2.5 was limited and they generally had low concerns to the issue. Universities should enhance the environmental protection education and the students’ self-care ability should be improved.

Key words: PM2.5, rapid assessment, Lot quality assurance sambing(LQAS), focus group discussion