Abstract: In order to study the Energy Pooling process of the rubidium vapor laser, this paper established a rate equation model which took Energy Pooling effect into consideration. Through calculating it was found that when the magnitude of the pump intensity was, the influence of Energy Pooling process on laser photon emission rate was not remarkable. The influencing degree was related to the excited population density and the rate coefficient. With the increasing of pump intensity and excited population density, the Energy Pooling process reduced laser photon emission rate. However, under the conditions of lower pump intensity and lower excited population density, Energy Pooling significantly reduced the spontaneous radiation so that the laser photon emission rate was increased.