For stochastic Hindmarsh-Rose equations with additive noises in the study of neurodynamics, the longtime and global pullback dynamics on a twodimensional bounded domain is explored in this work. Using the additive transformation and by the sharp uniform estimates, we proved the pullback absorbing and the pullback asymptotically compact characteristics of the Hindmarsh-Rose random dynamical system in the L 2 Hilbert space. It shows the existence of a random attractor for this random dynamical system.2000 Mathematics Subject Classification. Primary: 35K55, 35Q80, 37L30, 37L55, 37N25 ; Secondary: 35B40, 60H15, 92B20.