A method for preparing a sapphire lens, comprising: step A, sequentially forming an ink layer and a coating (7) on one surface of a large polymeric membrane (31); step B, laser-cutting the obtained large polymeric membrane (31) to form two or more small polymeric membranes (31) that are as thick as the large polymeric membrane (31); step C, adhering the surfaces of the small polymeric membranes (31) that do not contain the ink layer and the coating (7) to one surface of a sapphire sheet (1), such that an adhesive layer (4) is formed between the small polymeric membranes and the sapphire sheet (1), wherein the sapphire sheet (1) has a thickness of 0.3-1.5 mm, and the polymeric membranes (31) have a thickness of 0.02-0.2 mm; and step D, pressing the obtained sheet material to remove bubbles, thereby obtaining a sapphire lens. The method can significantly improve the production efficiency of a sapphire lens, thereby reducing raw material costs. The sapphire lens has improved bending resistance and light transmit
