A large NaI(Tl) crystal with a volume of 4 L was grown by Bridgman method. The crystal was tested by X-ray powder diffraction and UV-Visible near-infrared transmission spectroscopy. The results show that the crystal has a single phase and the transmittance is higher than 75% at 600~1 600 nm. The results of inductively coupled plasma emission spectroscopy show that the concentration of Tl ions in the crystal gradually increases from head to tail. After forging, cutting, grinding, polishing and packaging, NaI(Tl) crystal blank was made into square crystal with 100 mm×50 mm×400 mm. The scintillation property measurement shows that the average energy resolution of crystal is 7.9% under the excitation of 137Cs radioactive source, and the relative light output and energy resolution at different locations are different.