The invention discloses an organic film coating device and method. The organic film coating device comprises evaporation equipment, an electronic emitting device and spraying equipment, wherein the evaporation equipment comprises an evaporation container; a linear evaporation container is used as the evaporation container and a uniform organic gas is generated from the evaporation container; the electronic emitting device is horizontally arranged above the evaporation container, so that the organic gas obtained from the evaporation container by evaporating is uniformly electrified and an electrified organic gas is obtained; the spraying equipment drives the electrified organic gas to move toward a back plate under the action of an electric field, so as to form an organic film on the back plate. According to the device and the method, by uniformly electrifying the evaporated organic gas, the utilization rate of an organic material is improved, and the electrified organic gas is further accelerated through the electric field, is uniformly ejected out from the spraying equipment and deposited on the back plate through a mask, so that the precision and the velocity in filming are improved, and the uniformity of the film in large-area filming is ensured.