Pulsed laser therapy treats diseases such as vascular damage and pigmented damage, as well as hair removal, skin abrasion and wrinkle removal. Pulsed mode of operation of the laser emits a pulse of light that can act on the target tissue for a short period of time without injuring the neighboring normal tissues, so as to treat the relevant skin diseases. Clinical common pulse laser, solid-state laser yttrium aluminum garnet (YAG) laser, ruby laser, sapphire laser, neodymium glass laser, etc. Different lasers have different wavelengths and spectral ranges, and can treat different diseases. It can mainly treat vascular damage, pigmented damage, etc. It can also be used to remove hair and cosmetic wrinkles. It is recommended that before treatment, patients should be treated reasonably according to their own disease conditions and under the operation of professional physicians in regular hospitals to avoid adverse reactions.