Silver particles with submicron-size were prepared from silver nitrate solutions at various conditions by using the filter expansion aerosol generator(FEAG), and the size and morphology of particles were compared with those of particles prepared by ultrasonic spray pyrolysis. XRD and TGA analysis showed that pure silver particles were formed in 0.02 sec of residence time above 700℃ with air and nitrogen as carrier gas. As the precursor concentra-tion increased from 0.004 to 0.5mol/l, the mean particles size increased from 0.22 to 0.72㎛ for FEAG process. Above 700℃, silver particles with spherical and homogeneous morphology were produced, and larger size and broader size distribution particles were formed at higher reactor temperatures. The mean size of silver particles prepared from 0.5mol/l precursor solution by the FEAG process was 0.72㎛, which is smaller than 1.1㎛ particles formed by ultrasonic spray pyrolysis. This result is ascribed to the finer droplets size in the FEAG process.