The invention discloses a method and device for controlling a dishwasher, a storage medium and a processor. The method comprises the steps of photographing an inner cavity of the dishwasher through acamera in the dishwasher to obtain a photograph; analyzing the photograph by using a first model to determine the degree of cleanliness of tableware in the photograph, wherein the first model is trained through machine learning using multiple groups of data, and each group of data in the multiple groups of data includes the photograph and a label indicating the degree of cleanliness of the tableware in the photograph; after the degree of cleanliness is determined, displaying a first prompt message in a preset display interface, wherein the first prompt message is used to indicate the degree ofcleanliness. In this way, the effect of facilitating the knowledge of the internal cleanliness of the dishwasher is realized.