Eu2+-doped zinc fluoro-phosphate Zn-2[PO4]F was synthesized by the conventional high-temperature solid-state reaction. The phase formation was confirmed by X-ray powder diffraction measurements and the structure refinement. The photoluminescence excitation and emission spectra, and the decay curves were measured. The natures of the Eu2+ emission in inorganic hosts, e.g., the emission and excitation properties, the chromaticity coordinates, the Stokes shifts, the absolute quantum efficiency, and the luminescence thermal stability were reported. Under the excitation of near-UV light, Eu2+-doped Zn-2[PO4]F presents a narrow blue-emitting band centered at 423nm. The thermal stability of the blue luminescence was evaluated by the luminescence intensities as a function of temperature. The phosphor shows an excellent thermal stability on temperature quenching effects.