The invention relates to a liquid application apparatus and an application method. The liquid application apparatus includes a guide roll for guiding a sheet for application, and a slit die for applying a liquid to a surface of the sheet for application from an opening. The slit die has an upper layer flow path and a lower layer flow path spaced in the rotational direction of the guide roll and joining at the opening. In a cross section perpendicular to the axis of the guide roll, an angle [alpha] formed by the center line of the upper layer flow path and the center line of the lower layer flow path is 0.5 to 25 DEG , an angle [beta] formed by a line connecting the intersection point of the center line of the upper layer flow path and the center line of the lower layer flow path with the axis of the guide roll and by the center line of the upper layer flow path is 0 to 70 DEG as measured from this connecting line toward the center line of the upper layer flow path in the direction opposite to the rotational direction of the guide roll, and the distance [gamma] between a point where the two flow paths and join and the opening is 0.05 to 2.8 mm.