PROBLEM TO BE SOLVED: To provide a plant diagnosis robot capable of ensuring measurement accuracy of an information measuring device and increasing work efficiency while protecting the growing crop in cultivation shelves by avoiding a moving machine and the information measuring device from contacting the crop in a narrow work passage between left and right rows of cultivated crop.SOLUTION: A plant diagnosis robot comprises: a travel device (2) traveling between rows of cultivated crop an information measuring device for measuring growth information of the cultivated crop on one side of the travel device (2) and a control device (4) for controlling the travel device (2) and the information measuring device (3). The information measuring device (3) is disposed on the other side spaced at a distance (C) from the cultivated crop on the one side to be measured within a lateral width (D) of the travel device (2), to avoid contact with the cultivated crop in measurement work travel, thereby securing measurement accuracy without impairing growing quality.
