A droplet ejection apparatus includes: a base; a plotting system having a droplet ejection head that ejects functional liquid as a droplet, a carriage that holds the droplet ejection head, and a stage that holds a work at which the droplet is plotted; and an optical system having a light source that outputs a laser beam and an optical path, which is constituted between the light source and the droplet and through which the laser beam passes to irradiate the droplet; wherein: the plotting system and the optical system are established on the base sharing the upper surface of the base as a reference surface, and pattern is plotted and fixed through cooperation control of both systems.