Lead iodate crystals doped by Zn(II) were grown by silica gel method. Grown crystals were characterized by scanning electron microscopy (SEM), Energy dispersive X-ray spectroscopy (EDAX), X-ray fluorescence spectroscopy (EDXRF) and Non linear optical (NLO) property. SEM pictures shows that no morphological or structural changes take place due to doping. An EDXRF and EDAX study reveals the presence of zinc in doped crystals. The NLO property of the crystal was tested by Nd:YAG laser.