Taking a burner-type diesel particulate filter (DPF) as an example and based on the pyrogenation regeneration model, the variety laws of the exhaust back-pressure, particulate layer thickness and wall maximum temperature, etc.during the burner-type DPF regeneration were studied and analyzed under different working parameters, such as oil-spray pressure, spray rate and air-supply flux.The results indicate that the working parameters could influence the regeneration evidently.With the improvement of the oil-spray pressure, the wall maximum temperature increased markedly, and the regeneration rate was quickened.The burner power became stronger with the increase of oil -spray rate, and the amplitude of the wall maximum temperature was greater.But for the safe endurable temperature of DPF, the oil-spray rate must be controlled.When the oil-spray rate reached a certain extent, the oxygen content in the exhaust was deficient, the combustion efficiency decreased, and the soot oxidation velocity and regeneration rate slowed down.It increased the oxygen content by air supply and the regeneration process quickened.But with more air-supply quantity, the regeneration may slow down because of the enhancement of convection transfer heat loss.