Abstract: Compared with the traditional slope protection, ecological slope protection emphasizes the stability of the bank while achieving the goal of restoring the ecology and protecting the environment. This paper summarizes the connotation and characteristics of river bank slope's ecological protection and the protection technology commonly used in the river bank slope, and mainly introduces the use of stone cage as a flexible slope protection method, and its research progress and application in engineering at home and abroad. Through the analysis of the existing theories and experiments, the main design parameters affecting the slope protection performance of the cage net structure have been clarified. On this basis, considering the problems arising in the project, the topics that need further study are proposed: anti-scouring characteristics of stone cage network structure, the relationship between grading, thickness and impact velocity of rockfill material, and the combination of cage net and vegetation. Through in-depth studies of the structure of the stone cage net, we hope to get more theoretical support, so as to better guide the engineering practice.