Abstract: This paper deals with a numerical analyis on distributed parameter control systems in which the control parameters appear in both he governing equation and boundary conditions On the basis of a numerous calculation, the domain of stability of this type of equation fm dynamic responses is found and presented. When the control parameter is given as a step function, its effects on the ablation parameter of metal and quartz materials are studied. The numerical results show that the transpiration control parameter can control the ablation and temperature of the thermal protection lager effectively.