Temperature dependence of the acoustoelectric current oscillation in n-GaAs is investigated from 23 K to 180 K. 1/τp anp φc/φ0 are nearly independent of temperature and are ∼3.5×106 sec-1 and ∼2.5 from 50 K to 120 K, respectively. Here, 1/τp, φc and φ0 are the attenuation coefficient of amplified acoustic waves, the critical acoustic flux at which the current oscillation occurs and the acoustic flux at thermal noise level, respectively. The threshold electric field at which the current oscillation occurs increases with increasing temperature. The drift velocity of electrons, when the current is in saturation, is larger than the velocity of acoustic waves and increases with increasing temperature.