Abstract: Agricultural biotechnology is not only the basis of the biotechnology research and development, but also the most direct, extensive and important field in biotechnology application. Agricultural biotechnology makes great importance on agricultural production. Patent documents have great value in technological forecasting and technological innovation for the technical, economic and legal information contained. In order to make a comprehensive analyze on the agricultural biotechnology,this paper discussed the existing problems and difficulties in patents retrieval, identified International Patent Classification（IPC）codes related to agricultural biotechnology, constructed the patent retrieval strategy based on the literature features of agricultural biotechnology patents and characteristics of IPC system, and finished the data collection, which can serve as the data base of the global agricultural biotechnology.

Key words: agricultural biotechnology, patents, search strategies