Laser power adjusting method and system

The invention discloses a laser power adjusting method and system. The laser power adjusting method comprises the steps that a three-dimensional model of a manufacturing object is obtained; the three-dimensional model is cut into slices according to the set height threshold value, and a plurality of slice bitmaps are obtained and comprise a plurality of pixel points; the first pixel points of theoutline boundaries of the slice bitmaps are extracted; whether the distances between the second pixel points existing in the slice bitmaps and the first pixel points are within the distance thresholdvalue range or not is judged; if yes, the second pixel points are determined to be to-be-processed pixel points; if not the second pixel points are determined to be unprocessed pixel points; the firstpixel points and the to-be-processed pixel points are processed through the Gaussian filter function, and processed pixel points are obtained; the gray value of the processed pixel points and the gray value of the to-be-proces