To provide a die coating device capable of securing the accuracy of film thickness with one die head even in a coating liquid having wide physical property or under a wide coating condition.

A manifold inlet is formed at one end of a manifold 17 forming a die head 11 and a manifold outlet is formed at another end. A pump 22 for supplying the coating liquid is connected to the manifold inlet and a flow rate control valve 23 for controlling the flow rate of the discharged coating liquid is connected to the manifold outlet. The coating liquid is supplied into the manifold 17 in a quantity larger than the quantity of the coating liquid discharged from a slit and a part of the coating liquid is discharged from the manifold outlet. As a result, the accuracy of the film thickness is improved by reducing the difference of the pressure between the manifold inlet side and the manifold outlet side in the manifold.