A varifocal lens structure, a method of manufacturing the varifocal lens structure, an optical lens module, and a method of manufacturing the optical lens module. The varifocal lens structure includes a liquid lens unit including a silicone membrane that includes a first silicone elastomer, a polymer actuator disposed on an upper surface of the silicone membrane, and an adhesive silicone layer that is disposed between the silicone membrane and the polymer actuator and includes a second silicone elastomer.