Abstract: As for the library in agricultural research institutions after transformation, it is more important and urgent to develop digital library. Library is the necessary link of science and technology innovation for libraries in agricultural research institutions, so libraries should constantly excavate digital information resources so as to provide effective service of digital information resources. The necessity of establishing digital library was summarized, and the change of management mode of the library in agricultural research institutions under the digital environment was analyzed, meanwhile combining practical work experience, the digital construction of libraries in agricultural research institutions was explored.