A composition for preparing an emulsion or a microemulsion, the composition containing the following components (A) through (D). Component (A): an active component having a solubility of 200 ppm or less in 20ºC water； component (B): a non-water-soluble solvent having no alcohol groups； component (C): at least one non-ionic surfactant selected from the group consisting of polyoxyalkylene alkyl ether, polyoxyalkylene alkenyl ether, polyoxyalkylene alkyl amino ether, and polyoxyalkylene alkenyl amino ether； and component (D): a C8-C12 monohydric alcohol.
