Objective:To investigate the concentration and possible influencing factors of polycyclic aromatic hydrocarbons (PAHs) in urban settled house dust. Methods:Vacuum cleaner was used for gathering settled house dust in 61 urban homes,and high-performance liquid chromatography(HPLC) with fluorescence detection and wavelength programming were used for PAHs measurement. Self-administered questionnaire was used to collect the possible influencing factors on PAHs in settled house dust. Results:Of 61 samples,the detection rates of phenanthrene,fluorene and pyrene were all 100%,and others were more than 85%. The geometric mean (G) concentration range was from 0.113 to 1.919 μg/g. The G concentration of total PAHs was 10.066 μg/g,and the maximum concentration was up to 280.395 μg/g. The sum of PAHs was far higher for high molecular weight than low high molecular weight. No influencing factors were found on PAHs levels in settled house dust. Conclusion:The PAHs pollution is ubiquitous and its level might cause potential health effects. It needs further investigation with larger sample size to explore the possible influencing factors on PAHs levels in settled house dust.