To provide a plastic container having a suitability as a filling container for a liquid containing a volatile organic substance, e.g. an agricultural chemical, a makeup product, a seasoning or a fragrance, or the like.

This plastic container for a liquid containing a volatile organic substance is a plastic container on the internal surface of which a DLC(diamond like carbon) film is formed. In this case by specifying the composition, the density and the film thickness of the film, the plastic container has a flavor barrier property for an aromatic organic substance, and also, has a gas barrier property for a volatile organic solvent. Thus, the plastic container is obtained by optimizing the three conditions of the composition, the density and the film thickness of the DLC film.