In order to draw the relationship between ignition energy and gas concentration and gas explosion pressure, an experimental research method was used to study the explosion pressure produced by various ignition energies igniting different concentrations of gas. The results showed that the ignition energy for different concentrations of gas explosion pressure had a certain difference, gas concentration of 11.5% of the experimental conclusions and gas concentration of 7.5% and 9.5% of the opposite conclusion; gas concentration compared to the ignition energy, gas explosion pressure had a greater impact, and gas concentration of 9.5% of the premixed gas explosion, the explosion pressure value of each measurement point was the largest. Explosive pressure was next highest at a gas concentration of 11.5% and lowest at a gas concentration of 7.5%. The results of this study will bring some help to the prevention and investigation of gas accidents.