Er3+CaMoO4 crystal is grown by CZ (Czochralski) method from a flux of Na2MoO4. The optical homogeneity, absorption and emission spectra of Er3+CaMoO4 crystal are investigated. The absorption cross-section is 0.6×10-20 cm2 at 981 nm, and the emission cross-section is 0.91×10-20 cm2 at 1538 nm. 532 nm and 553 nm green up-conversion emission and 670 nm red up-conversion emission are observed at the 980 nm excitation. Er3+CaMoO4 crystal may be a potential 1.5 μm laser gain material and up-conversion luminescent material.