An infrared laser light source-based infrared laser diagnostic device, comprising an infrared laser generator area light source (110) used to generate a laser signal; a direction control device (120) fixedly connected to the infrared laser generator area light source (110) and used to control the output direction of the infrared laser generator area light source (110); a displacement control device (130) fixedly connected to the infrared laser generator area light source (110) and used to control the displacement motion of the infrared laser generator area light source (110); an electric motor driver (140) electrically connected to the direction control device (120) and the displacement control device (130), and used to drive the direction control device (120) and the displacement control device (130); an image capture device (150) used to capture an image of an afflicted area; and a central controller (160) used to control the described components. The present infrared laser diagnostic device facilitates observation of pathological tissues by medical personnel, and is able to automatically control the range of laser treatment, and during the entire use process is able to ensure sufficient laser light coverage without excessive human intervention. The device also features higher precision and efficiency.
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