Top soil (0-30 cm) samples were collected from 104 citrus orchards in Chongqing, and pH, SOM content and available nutrient contents were measured. The results showed that, for citrus growth, pH values of 90.5% samples were suitable, SOM contents of 87.5% samples were low, and the deficiency rates of available N and P were77.9% and 55.8%, respectively, the deficiency rates of available S, Ca, Mg, B, Mn, Cu, Fe and Zn were 24.0%, 13.5%, 44.2%, 92.4%, 35.6%, 45.2%, 41.3% and 72.1%, respectively. Meanwhile 54.8%, 6.7%, 21.2%, 16.4% and 4.8% of samples were excessive in available Ca, Mg, Fe, Mn and Cu contents, respectively. Except soil pH and available B, SOM and other nutrient contents of agricultural soil were higher than those of background soil in most citrus orchards. Therefore, more B and Zn fertilizers but less fungicide containing microelements should be used in the citrus orchards.