To provide an extrusion type coater for simultaneously forming a double layer preventing the drying, solidification and adhesion of a highly viscous and highly volatile organic solvent type coating liquid in the vicinity of a lip when the coating liquid is applied using this coater, and a coating method using the same.

In the extrusion type coater for simultaneously forming the double layer for simultaneously applying two or more layers comprising the organic solvent type coating liquid to a strip-like support continuously fed from an upstream side to a downstream side while the coating opposite surface of the support is held by a back roll, a slit for discharging an organic solvent is provided on the most upstream side.