A kind of closed bomb was designed and was used to measure the burning temperature of six DJ-6B primers at 15 mm to the primer. The experimental results indicate that the highest combustion temperatures of six primers are 405.87-563.28 ℃. With the heat released from the combustion of DJ-6B primer compositions using as the inner thermal resource, the burning temperature of primer compositions in the closed bomb was simulated by finite element method. The calculation results range from 423.45 ℃ to 552.95 ℃. The calculation results are consistent with experiment results.