The invention discloses a diode pumped solid state laser (DPL) and a debugging method therefor. The diode pumped solid state laser comprises a semiconductor pumping source, a coupling system, laser crystals, a bi-color plano-convex cylindrical surface totally-reflecting mirror, reflecting laser, a polarizing film, a quarter-wave plate, a pockels cell, and a plano-concave cylindrical surface output mirror, wherein the semiconductor pumping source is used for outputting pumping light; the coupling system is used for transmitting and homogenizing the pumping light, and coupling the pumping light into the laser crystals; the laser crystals are used for providing gain; the bi-color plano-convex cylindrical surface totally-reflecting mirror is arranged between the coupling system and the laser crystals and used for transmitting the pumping light and reflecting laser; the polarizing film is used for polarizing the laser; the quarter-wave plate is used for rotating the polarization direction of the passed laser for 45 degrees; when the pockels cell is not applied with voltage, the pockels cell is equivalent to a plain film; when the pockels cell is applied with quarter-wave voltage, the pockels cell is equivalent to the quarter-wave plate; and the plano-concave cylindrical surface output mirror is used for outputting laser. According to the diode pumped solid state laser provided by the invention, the repetition frequency of the pumping light is improved, the pumping light interval is shortened, the power density of the pumping light is improved; and in addition, the diode pumped solid state laser is small in divergence angle, so that the ranging or imaging distance is improved, and the application range is expanded.