Abstract: Disclosed is a microlens manufacturing method which comprises the step of: positioning a X-ray mask for manufacturing the microlens on an substrate on which a sensitive film is formed, and arranging a rotation axis of the substrate and a central axis of the X-ray mask; applying X-rays to the X-ray mask to expose the sensitive film while fixing the X-ray mask and rotating the substrate; developing the sensitive film to form the microlens; performing an electroplating process on the plating base to form a metal layer; and separating the metal layer from the sensitive film structure and combining the metal layer with a mold frame for injection molding the microlens and manufacturing an injection mold.