A method for producing an acicular body having a support base and an acicular protrusion on one surface of the support base includes supplying an acicular body-forming liquid, in which an acicular body-forming material is dissolved or dispersed in a solvent, to an intaglio plate having a recess corresponding to a protrusion, under a first pressure environment of not more than 0.05 MPa, changing the first pressure environment of the acicular body-forming liquid supplied to the intaglio plate to a second pressure environment of higher than 0.05 MPa, drying the acicular body-forming liquid supplied to the intaglio plate such that an acicular body is formed, and peeling the acicular body from the intaglio plate.
