The Parameters effecting on freqnency response of valveless self-pulsating combustor, (such as pipe length,cross-section ratio of combustion chamber/inlet and/or outlet section, location of heat source and temperature distribution) arestudied. Results show that the adjustment in length of combustor's inlet section effects upon frequency of combustor more effi-cient than outlet section. The cross-section ratio of combustion chamber/inlet and/or outlet section is larger, the frequency ofpulsating combustor is lower and that with the total length of combustor constant the effect of adjustment of chamber's length isnot monotonous for frequency.