Lithium niobate (LiNbO3) is a non-naturally-occurring salt consisting of niobium, lithium, and oxygen. Lithium niobate (LiNbO3) is one of the most widely studied photonic crystal materials. In this work the chemical bath deposition method was employed for preparing lithium niobate (LiNbO3; LN) nanostructures. LiNbO3 nanostructures were deposited on quartz substrates. Stirring was continued for 12 h and deposition was performed at various times (5, 10, 15, 20 and 25 min). The Optimum condition was at 15 minute. The optical properties have been investigated using UV-Vis spectrophotometer and structural properties using X-ray diffractometer. Structural properties reveals that all the samples have a hexagonal structure with a maximum diffraction peak at the (012) diffraction plane and at 2θ = 23.75. Optical absorption reveals the absorbance of a sample with the energy gap shifting with decreasing in deposition time from 3.8 eV to 4 eV with the peak position of absorption in UV region