The invention discloses a Mn<4+>-doped red light-emitting material and a preparation method thereof as well as a novel lighting source, and belongs to the field of a preparation method of fluorescent materials. The light-emitting material has a structural formula A[14-y]B6C[10-x]O35:xMn<4+>,yM<3+>, wherein in the formula, A represents one or two of alkaline-earth metal Ca, Sr or Ba; B represents one or two of Zn and Mg; C represents one or more of Al, Ga or In; M<3+> represents Sc, Y, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu; x is greater than or equal to 0.005 and less than or equal to 1; y is greater than or equal to 0 and less than or equal to 2. The invention further provides the preparation method of the Mn<4+>-doped red light-emitting material and the obtained novel lighting source. The Mn<4+>-doped red light-emitting material can be used for emitting red light in a wavelength range within 650nm to 750nm when being excited by excitation light sources such as ultraviolet light, near ultraviolet light or blue light.