Xact-625 automatic multi-metal online monitor was used to monitor the contents of metal elements in PM2.5 in Spring in Chongqing in 2013 to analyze the concentration distribution feature and change law with time of PM2.5 and the metal elements, and the results show that PM2.5 mass concentration change range in Spring was 15.6-157.3 ug/m3, that the average total concentration of 15 metal elements was 2481 ng/m3 which accounted for 3.86 percent of PM2.5 total concentration, that in typical day analysis, the total concentration of Zn and Pb started to rise since 5 o’clock and reached the peak at 10 o’clock, and that the concentration of As amounted to the minimum value in 1 o’clock. Enrichment factor method analysis result showed that the enrichment factor of Zn, As, Se, Cd, Sn, Hg and Pb was relatively bigger, thus, pollution was man-made.