Infrared detector for plant diseases

The utility model relates to the technical field of plant diseases, and discloses a plant disease infrared detector which comprises a disease detector, a detection head is fixedly assembled on the back face of the disease detector, a display screen is arranged on the front face of the disease detector, a handle is fixedly assembled on the outer wall of the disease detector, and the handle is connected with the disease detector. The inner wall of the plant disease detector is fixedly connected with a bayonet lock mechanism, an inner cavity of the plant disease detector is movably sleeved with a marking pen, and one end, far away from the bayonet lock mechanism, of the marking pen is fixedly provided with a friction pattern I. According to the plant disease infrared detector, through mutual cooperation of a collecting pipe, a rubber ball and an opening on the device, the plant disease can be accurately detected; according to the device, the rubber ball is arranged in the collecting pipe, a worker holds the coll