Abstract: In recent years, the large-scale fog and haze events occurred frequently in China, which had attracted people’s wide attention to urban air pollution. Related studies had showed that heavy metals in atmospheric particulate matter were closely related to human respiratory disease incidence, as well as to the damage of respiratory system. Contents and pollution indexes of Cd, Cr, Cu, Pb, Ni and Zn in the atmospheric particulate matter PM_2.5 and PM₁₀, road dusts, live-mosses and moss-bags were analysed in Taizhou city of Jiangsu province, China. The results indicated that PM_2.5, with the smallest particle size, had the highest concentration of heavy metals and could be chosen as an optimal monitoring object to analyze atmospheric heavy metals. The data by live-moss analysis were reliable and close to the value of PM₁₀ and road dusts, which might be the principal reason why they were selected as biological indicators of atmospheric heavy metal deposition in Europe. The pollution index analysis indicated that urban atmosphere was seriously polluted by Cd, Cu and Zn, whose concentration values were 18.86, 3.54 and 3.15 times higher than the soil background values, respectively. While pollution level of other metals was relatively slight.