To provide a coating method for obtaining a thin coating film which is high in thickness precision and has a smooth surface and equipment for the method.

In the coating method, while a coating liquid is supplied from a slit 18C of a coating head 18, the coating film 28 having a prescribed thickness is formed on a belt-like flexible support 12 conveyed continuously at a position separated at a prescribed distance from the coating head 18 and dried. The thickness of the coating film immediately after being applied is made 2-40 μm, and a relative air current speed on the surface of the coating film until the viscosity of the coating liquid is 100 mPa s is made 0.2 m/s or below.