2009 Quantitative Economics Annual Session was held by Shenzhen University economic college during 28th to 30th March. Director of Chinese Academy of Social Sciences Quantitative and Technical Economic Research Institute WAGN Tongsan, well-known economist in measurement GAUN Zhongmin, Prof. HONG Yongmiao and LU Maozu attended the meeting. Over 500 economists from about 100 Universities also took part in the meeting. The participants discussed problems about economic theory and methods, macro-economic growth and development, regional economic development and trade and investment. Our college teacher Prof. YAO Hongxin delivered and read his paper “Optimal Environmental Policy with Correlated Demand” in the meeting and discussed it with exports. 2010 Quantitative Economics Annual Session will be held by Huaqiao University.