Abstract: The RE-doped luminescent powder CaMoO4: Eu³⁺ was prepared by chemical precipitation method with the ammonium molybdate, carium nitrate and europium oxide as raw materials. Experimental results showed that the high-quality single-phase luminescent powder CaMoO4: Eu³⁺ was prepared with the process parameters that the pH value of solution is about 7, reaction temperature is 60°C, sintering temperature is 900°C and the dosage of the dopant Eu³⁺ is 25wt%. The CaMoO4: Eu³⁺ products were characterized by XRD and excitation-emission spectrography. It was found that the powder can be excited efficiently by the ultraviolet light with wavelength 394 nm or visible blue light with wavelength 465 nm, and the highest luminous intensity is at 616 nm on the emission spectrum, where the luminescence is in reddish tone due to the dominant electric dipole transition from ⁵D0 to ⁷F2. The luminescent powder CaMoO4: Eu³⁺ is therefore a prospective reddish-tone phosphor applied to achromatic-light LEDs.