Abstract: Structure and performance analysis on mixed-flow grain dryers were conducted based on the information of various kinds of domestic and abroad products of mixed-flow grain dryers. The contents were as follows: the structure, size, horizontal distance, vertical distance and distribution density of the air ducts; the capacity per duct; the overall size of a modular section; the number of layers of air duct per modular section; the number of ducts per layer and the number of ducts per modular section; the area of the cross-section of the dryer tower; the relations between the structure and performance; the design characteristics of the abroad products of the mixed-flow grain dryers.