A light source module, wherein the light source module comprises a first luminous element and a package part covering the first luminous element, the first luminous element emits first color light with a peak wavelength of 435-465 nm; the package part comprises: a first additional illuminant, arranged to receive part of light emitted by the first luminous element and convert the part of light into second color light with a peak wavelength of 485~515 nm, a second additional illuminant, arranged to receive part of light emitted by the first luminous element and convert the part of light into third color light with a peak wavelength of 520~580 nm, and a third additional illuminant, arranged to receive part of light emitted by the first luminous element and convert the part of light into fourth color light with a peak wavelength of 615-655 nm; the first color light, the second color light, the third color light, and the fourth color light are mixed to form emitted light of the light source module, and the emitted light is neutral white light in CIE1931 color space within an interval surrounded by points with a correlated color temperature of 5000±350K and a distance from blackbody locus of duv = -0.006~0.006, and characterized by a spectrum of the emitted light having the following characteristics: defining spectral energy of the spectrum of the emitted light in a visible light range within a wavelength range [380~780nm] as entire spectral energy of the emitted light; spectral energy of the emitted light in a wavelength range [380~470 nm] accounting for 10.0% ~ 30.0% of the entire spectral energy; spectral energy of the emitted light in a wavelength range (470 ~ 560 nm] accounting for 25.0% ~ 45.0% of the entire spectral energy; spectral energy of the emitted light in a wavelength range (560 ~ 780 nm] accounting for 40.0% ~ 60.0% of the entire spectral energy; and spectral energy of the emitted light in a wavelength range (470 ~ 520 nm] accounting for 12.0%~32.0% of the entire spectral energy. the first luminous element emits first color light with a peak wavelength of 435-465 nm; the package part comprises: a first additional illuminant, arranged to receive part of light emitted by the first luminous element and convert the part of light into second color light with a peak wavelength of 485~515 nm, a second additional illuminant, arranged to receive part of light emitted by the first luminous element and convert the part of light into third color light with a peak wavelength of 520~580 nm, and a third additional illuminant, arranged to receive part of light emitted by the first luminous element and convert the part of light into fourth color light with a peak wavelength of 615-655 nm; a first additional illuminant, arranged to receive part of light emitted by the first luminous element and convert the part of light into second color light with a peak wavelength of 485~515 nm, a second additional illuminant, arranged to receive part of light emitted by the first luminous element and convert the part of light into third color light with a peak wavelength of 520~580 nm, and a third additional illuminant, arranged to receive part of light emitted by the first luminous element and convert the part of light into fourth color light with a peak wavelength of 615-655 nm; the first color light, the second color light, the third color light, and the fourth color light are mixed to form emitted light of the light source module, and the emitted light is neutral white light in CIE1931 color space within an interval surrounded by points with a correlated color temperature of 5000±350K and a distance from blackbody locus of duv = -0.006~0.006, and characterized by a spectrum of the emitted light having the following characteristics: defining spectral energy of the spectrum of the emitted light in a visible light range within a wavelength range [380~780nm] as entire spectral energy of the emitted light; spectral energy of the emitted light in a wavelength range [380~470 nm] accounting for 10.0% ~ 30.0% of the entire spectral energy; spectral energy of the emitted light in a wavelength range (470 ~ 560 nm] accounting for 25.0% ~ 45.0% of the entire spectral energy; spectral energy of the emitted light in a wavelength range (560 ~ 780 nm] accounting for 40.0% ~ 60.0% of the entire spectral energy; and spectral energy of the emitted light in a wavelength range (470 ~ 520 nm] accounting for 12.0%~32.0% of the entire spectral energy. defining spectral energy of the spectrum of the emitted light in a visible light range within a wavelength range [380~780nm] as entire spectral energy of the emitted light; spectral energy of the emitted light in a wavelength range [380~470 nm] accounting for 10.0% ~ 30.0% of the entire spectral energy; spectral energy of the emitted light in a wavelength range (470 ~ 560 nm] accounting for 25.0% ~ 45.0% of the entire spectral energy; spectral energy of the emitted light in a wavelength range (560 ~ 780 nm] accounting for 40.0% ~ 60.0% of the entire spectral energy; and spectral energy of the emitted light in a wavelength range (470 ~ 520 nm] accounting for 12.0%~32.0% of the entire spectral energy.