Laser modulation method and system

The invention belongs to the technical field of adaptive optics, and particularly discloses a laser modulation method, which comprises the following steps of: determining a block division rule; performing block division on the modulation module according to a block division rule; selecting a plurality of blocks meeting specific conditions from the divided blocks; performing the following operations on the plurality of blocks meeting the specific conditions one by one: applying a modulation parameter to the current block to modulate the laser; acquiring a light intensity distribution image of the laser which is modulated and influenced by atmospheric turbulence; calculating an evaluation value; if the difference between the currently calculated evaluation value and the previously calculated evaluation value is greater than an evaluation threshold value, calculating a modulation parameter according to the currently calculated evaluation value and the previously calculated evaluation value; next adjustment is ca