The present invention refers to a system for the diagnosis of plant anomalies which comprises at least: an acquisition device (1) capable of capturing images in real time of at least one sample of a plant to be diagnosed; a storage unit (2) comprised by a database of digitalized images (7) of samples of plants affected by anomalies and also comprised by a database of technical information (8) related to said anomalies; a human interface device (3) capable of displaying digitalized images of the plant samples; a human control device (4) capable of allowing for an active interaction between a user and the human interface device; and a processing unit (5) operatively associated to the acquisition device (1), to the storage unit (2), to the human interface device (3) and to the human control device (4). This processing unit (5) is configured to run a dedicated computer program (6) capable of: displaying the image of the sample of the plant to be diagnosed and the digitalized image of the sample of the plant filed in the database of images (7) from the storage unit (2) simultaneously in the human interface device (3); automatically providing information of at least, one product and/or method suitable for treating the anomaly diagnosed by means of the human interface device (3); and allowing for the graphic manipulation of the plant images shown in the human interface device (3) by means of the human control device (4).