The effect of central gray (CG) on analgesia produced by auricular electrostimulation (AES) has been studied on rats. In the animals with removed CG, the latent periods (LP) of pain responses measured after AES by the hotplate and tail-flick tests were significantly shorter than those in the control group. In the animals with removed CG, the LP measured by the hot-plate test before stimulation was significantly longer as compared to the control. The initial magnitude of the LP measured by the tail-flick test did not differ from the same indicators in the control group rats.