PROBLEM TO BE SOLVED: To provide a composite wavelength conversion particle that has high use efficiency of light and high use efficiency of a phosphor itself, can achieve both high efficiency light emission and high reliability, and is environmentally friendly, and to provide an organic resin composition containing composite wavelength conversion particles, and a light-emitting device.SOLUTION: A composite wavelength conversion particle 1 contains an yttrium aluminum garnet phosphor 3 dispersed in a fluoride matrix particle 2 comprising one or more compounds selected from the group consisting of magnesium fluoride, calcium fluoride and strontium fluoride; and the particle shows a maximum of emission intensity in a wavelength region of 510 nm or more and 550 nm or less.
