The present invention relates to a medical device for treating prostate diseases by using near-infrared LEDs (light emitting diodes), and more particularly to a medical device for treating prostate diseases in which a probe having installed therein near-infrared LEDs and a vibrator is constructed to be inserted into the rectum to radiate near-infrared rays to the prostate from a position closest to the prostate and render a direct physical massage function to the prostate, thereby effectively treating prostate-related diseases. Also, the present invention relates to a pad mechanism supplementing the probe mechanism, being brought into close contact with the perineal region to radiate red visible rays and transmit vibration to the organs around the prostate thereby curing the natures of diseases in the organs around the prostate, and a disposable probe condom used in a state in which it is worn over the probe mechanism.