The experimental study on an electron-beam-initiated hydrogen fluoride laser with SPG-200 pulsed power generator is introduced.Construction of laser and performance parameters are prensented in detail.The output energy under the condition of different pressure and different relative concentration is given，and the results of experiment are analyzed.The experimental results show that when a stable cavity is used the maximum output energy of 4.55mJ was obtained experimentally with the diode voltage of about 190kV，diode current of about 1.9kA，the gas mixture of C2H6：SF6=0.35：10，and the pressure of 30 kPa.With a plane-parallel cavity，the maximum output energy of 5.22 mJ was obtained under the same conditions.