The US green laser system has a 532nm laser output for the treatment of enlarged prostate, which is well absorbed by oxygenated hemoglobin and little by water. This principle of selective absorption of light makes the 532nm laser energy not consumed in water, but concentrated to be absorbed by the vascular rich soft tissues, thus realizing the vaporization of soft tissues in a non-contact manner. The PVP emits laser light that vaporizes the hyperplastic prostate tissue, quickly opening up the urinary tract and restoring it to a smooth flow. The green laser treatment generally takes about an hour for the patient to achieve a cure. The actual PvP system has the following three advantages: Advantage one: selective absorption of photons, a strong target The green laser can vaporize soft tissue in a liquid environment in a non-contact manner, and its photons will be absorbed by the vascular rich tissues to achieve “selective photo prostate vaporization (PVP)”. The unique wavelength characteristics of the green laser combined with the high power of the laser only vaporize the superficial lesions with high efficiency, featuring micro-invasive, rapid surgery, less bleeding, quick recovery, and good healing. Advantage 3: Basically no bleeding during and after surgery, no complications The green laser has a special affinity for the red color, and during treatment, the green laser first acts on the blood vessels and closes them, so there is basically no bleeding during the surgery, and it is safe without complications.