Abstract: To understand the diversity of soil microbial communities in urban area, the carbon source metabolic activities in the urban parks of different history (AT (Olympic Forest Park), CHY (Sun Park), YYT (Yuyuantan Park), TRT (Taoranting Park), RT (Ritan Park), TT (Tiantan Park), constructed 8, 32, 52, 317, 486, 592 years ago, respectively) were analyzed using Biolog-ECO plates. The results showed that the carbon-source utilization of soil microorganisms were different among different urban parks in Beijing. The AWCD of AT was significantly lower than other parks with longer historical years (P < 0.05). The soil microbes mostly used polymers as carbon-source in AT and mainly utilized the carbon-source of carbohydrate, amino acids in other parks. The functional diversity of soil microbial community in AT were significantly lower than that in other parks (P < 0.05). Principal component analysis demonstrated that the principal components extracted from 31 carbon sources were related to soil microbial carbon source utilization; the principal components accounted for 89.00% of the total variables variance. The important carbon sources were carbohydrates and amino acids. Redundancy Analysis showed that total carbon (TC) was a key factor that was most highly correlated with soil microbial carbon-source metabolism in different urban parks. Park history has a strong influence on the carbon-source metabolic capacity of soil microorganisms in urban park green-land.