The invention discloses a deformable lens, which consists of a liquid bead, a first battery lead plate and a second battery lead plate, wherein the first battery lead plate and the second battery lead plate clamp the liquid bead to ensure that the liquid bead contacts the surfaces of the first battery lead plate and the second battery lead plate respectively to form the lens; and the deformable lens is deformed into one of a convex lens, a planar lens, a concave lens or an irregularly shaped lens and has an adjustable focal distance by changing electric potentials of electrode groups on the two battery lead plates, adjusting the contact areas of the liquid bead and the battery lead plates and using the surface tension of the liquid bead. The deformable lens can be controlled to deform, can increase the application range of the deformable lens using the liquid bead as an ophthalmic lens, and because the deformable lens of the invention is formed by using the two battery lead plates to clamp the liquid bead to form the lens, a light ray cannot have a base plate and an electrode part on a penetration path to ensure that the penetration rate of the light ray is high, the loss of light ray penetrations, and the application range of an electronic type zooming technique can be increased.