The invention discloses a recipe recommendation method and device and a range hood. The method comprises steps that the range hood acquires first image information of a target; the range hood uses a first mode to analyze the first image information and determines first physiological states corresponding to the first image information, wherein the first mode is obtained through machine learning byuse of multiple groups of data, and each group of the data in the multiple groups of the data comprises the first image information and the physiological states corresponding to the first image information; and the range hood recommends a recipe corresponding to the first physiological states to the target according to the first physiological states. According to the invention, a technical problemof failure to recommend recipes to users according to physical conditions of the users of a range hood in the prior art is solved.