After leaving the station at 200 1, I worked in the monitoring center of Beihai Branch of State Oceanic Administration and Shanghai Fisheries University successively, mainly engaged in the teaching of marine ecology, biology and mathematics, as well as the research in the fields of marine ecology and biogeochemistry. 200 1 was hired as a professor-level senior engineer by the monitoring center of Beihai Branch of State Oceanic Administration, and was hired as a visiting researcher by Qingdao No.1 Oceanic Administration in 2002. In June, 2004, he was hired as an editorial board member by the core journal Ocean Science. In July 2006, he was hired as the editorial board member of the core journal Journal of Mountainous Areas. In February, 2005, he was hired as the editorial board member of the core journal Coastal Engineering. Participate in the South China Sea expedition jointly conducted by 18 countries and regions in the international GLOBEC (global marine ecosystem research) research plan (which lasted for 3 months at sea); The investigation of the Yellow Sea and the East China Sea in the international LOICZ (study on land-sea interaction in coastal zone) research plan and the investigation of the Yellow Sea and the East China Sea in the international JGOFS (joint study on global ocean flux) research plan. He also participated in the offshore survey and data collection in Qingdao Jiaozhou Bay and Yantai for many times. Participate in the research on the dynamic process and sustainable development of the ecosystem in Jiaozhou Bay and other waters. At present, the ecological, environmental and biogeochemical processes in Jiaozhou Bay and the Yangtze River estuary are being studied.