Vegetable protein is a sustainable and important source of protein. Supplementing or replacing some of the deficiencies of animal protein with vegetable protein has become a research hotspot in food industry science and technology. This paper mainly introduces the structural analysis and flexible processing theory of vegetable protein at home and abroad， expounds the principle and research progress of vegetable protein processing technology， the application of vegetable protein in the food industry， and points out the existing problems and future development trends， in order to provide future vegetable proteins. The research and development of protein processing technology provides ideas and references.