Building an independent knowledge system and discourse system in the field of food security is an essential part of accelerating the construction of the three systems of philosophical and social sciences with Chinese characteristics，as well as crucial dialogue tools for the world to understand China and build a community of with a shared future for mankind.The theory and practical paths in the field of food security in China provide guidance and a broad background for constructing a food security knowledge system with Chinese characteristics，conducting theoretical innovation，and forming an academic and international discourse system of food security.At the same time，the challenges faced by China in food security urgently require the consolidation of the food security knowledge system and the guidance of innovative theoretical practices.This article discusses in refining theoretical innovations，consolidating the knowledge system，and constructing discourse system for food security with typical Chinese culture and values and with logic consistency between theory and practice.