CaMoO4:Ho3+　phosphors　were　synthesized　by　sol-gel　method.　The　samples　were　characterized　by　X-ray　powder　diffractometer,　fluorescence　spectrometer　and　were　refined　by　Rietveld　method.　The　effects　of　the　concentration　of　Ho3+　on　the　luminescence　properties　were　studied　and　the　color　coordinates　of　CaMoO4:Ho3+　were　calculated.　The　results　show　that　the　optimal　concentration　of　Ho3+　is　2%(mole　fraction).　The　concentration　quenching　mechanism　is　verified　to　be　electric　dipole-electric　dipole　interaction.　The　color　coordinates　range　of　phosphors　of　this　series:　x　is　0.298　7　to　0.317　7,　and　y　is　0.664　4　to　0.689　7,　which　belongs　to　green　light-emitting　area.　CaMoO4:Ho3+　could　be　efficiently　excited　by　450　nm,　which　is　a　potential　green　phosphor　for　white　LED.　©　2020,　Journal　of　Synthetic　Crystals　Press.　All　right　reserved.