Abstract: The present disclosure belongs to the field of cooking utensils, and in particular relates to a pot body, an air fryer, and an air circulation system. The air fryer includes a machine body and a pot body. The pot body is of rectangular structure. A flow guide isolation hood and a lower fan blade are arranged in the machine body. A point of intersection between a rotation axis of the lower fan blade and the flow guide isolation hood is B. Any point on an edge of the flow guide isolation hood is taken as A. An angle between a tangential direction of the point A and a horizontal plane is defined as ?, 45°???90°. The air fryer may accommodate most of food to ensure the integrity of food; and air forms a vortex rotating at a high speed, solving the problem of non-uniform heat.