Beam shaping device and beam shaping mirror surface adjusting method

The invention discloses a beam shaping device and a beam shaping mirror surface adjusting method, and relates to the technical field of laser. The light beam shaping device comprises a first optical assembly and a second optical assembly arranged opposite to the first optical assembly, and a light beam enters the first optical assembly, then sequentially penetrates through the first optical assembly and the second optical assembly and is emitted out of the second optical assembly. The first optical assembly and the second optical assembly are aspheric cylindrical mirrors; the first optical assembly is used for deflecting incident light so as to enable light rays to be uniformly distributed when a light beam enters the second optical assembly, and the second optical assembly is used for collimating the light beam so as to enable emergent light emitted from the second optical assembly to be propagated along a straight line. According to the technical scheme, the number of overall optical elements is small, and