The present invention provides a display method, a display system, and a readable storage medium for plant disease diagnosis information. The method comprises: acquiring a plant image; using a disease location detection model to recognize and process the plant image, so as to determine whether the plant image has a suspected disease area; if a result recognized by the disease location detection model indicates that there is at least one suspected disease area, marking and displaying the suspected disease area according to a first preset mode; using a disease diagnosis model to recognize and process the plant image, so as to acquire species information and determine whether the plant image has a suspected disease; and if a result recognized by the disease diagnosis model indicates that there is at least one suspected disease, performing information display regarding the suspected disease according to a second preset mode.