A portable screen combined with a rotary supporter, which is used in a small projector or a mobile phone into which a projector is embedded. The support plate is provided with the rotary supporter and a rotating fixing plate so that the screen can be easily installed and carried. The material area can be reduced to ½ or less and cost for manufacturing can be reduced ½ or less based on the screen and further weight of the screen can be reduce ½ or less.