The invention belongs to the technical field of office articles, in particular to an air purifying device for a meeting room with good filter effect, and solves the problem of weak air filter effect in the meeting room caused by long purifying time in a traditional air purifying device. The air purifying device for the meeting room with good filter effect comprises a base; an electric rotating table is connected to the center of the top of the base through a bolt; the top of the electric rotating table is connected with a shell through a bolt; an air inlet is formed in one side of the shell; an intake protection net plate is connected into the air inlet through a bolt; and an air outlet is formed in one side of the shell. Through work of an intake electric shutter blind and an exhaust electric shutter blind, the intake and exhaust positions of the air purifying device are converted all the time, so that the air sucking range of a circulating fan is widened, the filter effect of the airpurifying device on internal air of the meeting room can be prominently improved, and the purifying time of the internal air of the meeting room is shortened.