Abstract: The effects of inlet condition including droplet size,inlet moisture content and inlet airflow speed on corrugated plate dryer’s performance were studied in a visualized experiment system.A laser particle sizer was used to measure water particle size distribution.The results show that: the separation efficiency increases with the increasing of droplets size and inlet moisture content,and increases with the increasing of inlet velocity firstly,then decreases after reaching the peak; the critical inlet speed resulting re-entrainment decreases with the inlet moisture content increasing; the pressure drop of dryer increases with the inlet air speed quadratically.