Organophosphates esters (OPEs) in dust collected from the classrooms of university and residencial sites were determined using GC-MS. Concentrations and profiles of seven OPEs including Tri-n-butyl phosphate (TnBP), Tris(2-ethylhexyl) phosphate (TEHP), Tributoxyethyl Phosphate (TBEP), Triphenyl Phosphate (TPhP), tri(2-chloroethyl) phosphate (TCEP), Trichloropropyl phosphate (TCPP) and Tridichloropropyl phosphate (TDCPP) were discussed in this work. The concentration of Σ7OPEs varied from 317.44 to 2566.97ng/g, which is lower than those reported in the developed countries. TnBP, TCPP and TPhP exhibited high detection rates in all the dust samples. Particularly, the detection rate of OPEs was 100% for air-conditioning dust, while it was zero for the supermaket dust. The Σ7OPEs with high concentration (1836.85~2566.97ng/g) were observed in the samples related to strong human activities, such as gymnasium, dormitories, classrooms and copy shop, while it was relatively low in the parking lot (317.44ng/g). Phenylphosphate, with mean concentration of 937.26ng/g, dominated the TPhP profile (56%) in the dust from classroom, while the chloro phosphates with mean concentration of 448.12ng/g dominated the TCPP profile in the residential dust (60%). The average exposure of OPEs for adults was estimated to be 0.60ng/(kg·d). It was lower than that of children (2.51ng/(kg·d)) due to the prominent exposure path through mouth for children.