Abstract: The situation of personal dose monitoring for workers involved in the construction and commissioning of China spallation neutron source from 2014 to 2017 is presented. The routine monitoring method, with the OSL 4 component badge-type personal dosimeter employed, was used. Theaverage effective doses obtained are 0.11, 0.11, 0.15, 0.15 mSv/a respectively, with the corresponding maximum of 0.9, 0.27, 0.62, 0.65 mSv/a. It showsthat the annual effective dose per capita is much smaller than the facility's management target (10 mSv/a).