The invention discloses a cooking mode display method and device and a range hood. The method comprises the following steps: obtaining first image information of a current food material; base on the first image information, determining the type of the food material; determining at least one type of course corresponding to the food material according to the type of the food material; and determining the cooking mode of the food material according to the course, and displaying the cooking mode on the range hood. The cooking mode display method and device and the range hood solve the technical problem of single function of the range hood in the related technology.