Abstract: Digital agriculture is an advanced stage of agricultural modernization． It is the only way for China to move from a large agricultural country to an agricultural power． It is also a hot issue concerned by academic community． In order to systematically study theoretical achievements of digital agriculture, relevant literature of domestic scholars were combed and summarized． Connotation, development mode, existing problems, development path, evaluation index system and international experience of digital agriculture were summarized． Existing research of digital agriculture was commented and prospected． It could provide reference for high-quality development and future research of digital agriculture in China．