At present, he is a professor at China Agricultural University, a doctoral supervisor, a vice president of the School of Biology, and a deputy director of the State Key Laboratory of Agricultural Biotechnology. He is also a member of the editorial board of Animal Biotechnology, member of the International Committee on Genetics Application and Animal Production, member of the Scientific Committee of the International Poultry Genome Project, deputy secretary-general of China Agricultural Biotechnology Society, deputy director of the Agricultural Biotechnology Professional Committee of China Bioengineering Society, vice chairman of China Animal Biotechnology Society, vice chairman of China Agricultural Biochemistry and Molecular Biology Society, vice chairman of China Animal Genetics Society, and member of "National Agricultural Genetic Engineering Product Safety Committee".

Li Ning is the winner of "National Outstanding Youth Fund", the academic leader of "Innovative Research Group" of National Natural Science Foundation, the chief scientist of "973" project of Ministry of Science and Technology, the head of major special expert group of "863" project, and the head of the Fifth Framework Plan of EU. He presided over 26 projects of various kinds and published more than 200 academic papers, including more than 60 SCI papers; Its scientific research achievements have won 3 national second prizes, 2 provincial and ministerial first prizes, 2 second prizes and 2 invention patents, and 16 patents are still in the publicity period. He also won many awards, such as the special government allowance of the State Council, the advanced individual of the 863 Program, the WCGALP Young Scientist Award, and the advanced agricultural science and technology worker in the capital.