To provide a liquid coating head which is capable of forming a coated material with good dimensional precision and to provide a liquid applicator and a coating method using the same.

The liquid coating head is an annular coating head having an annular slit to discharge liquid over the inner circumference. It is provided with an annular distribution chamber communicating with the annular slit and a supply port to supply the liquid from the outside to the distribution chamber. Further, an annular piston for extruding the liquid supplied into the distribution chamber by pressurization is arranged in front of the distribution chamber.