Dy 3+ :Ca 3 La 2 (BO 3 ) 4 crystal has been grown by the Czochralski method. The polarized absorption, emission spectra and decay lifetime measurements of Dy 3+ -doped Ca 3 La 2 (BO 3 ) 4 crystal have been performed at room temperature. Based on the Judd-Ofelt theory, the spectroscopic parameters t (t = 2, 4, 6), radiative transition probabilities, radiative lifetimes and fluorescence branching ratios were obtained. The emission cross-section of the 4 F 9/2 → 6 H 13/2 transition which was useful for the laser application has been calculated by the Fuchtbauer-Ladenburg (FL) equation. The quantum efficiency was calculated to be 89.7%, which was larger than that of some reported crystals. Those results showed that Dy 3+:Ca 3 La 2 (BO 3 ) 4 crystal was a promising candidate for solid state yellow laser emission.Keywords: Dy 3+ :Ca 3 La 2 (BO 3 ) 4 crystal, crystal growth, spectra characteristics, Judd-Ofelt theory analysis