A liquid crystal lens and a display device, for improving the efficiency of natural light modulation and lowering the device profile. The liquid crystal lens includes an upper substrate and a lower substrate configured opposite each other, liquid crystal molecules located between the upper substrate and the lower substrate, a plurality of upper electrodes located on the upper substrate, and a plurality of lower electrodes located on the lower substrate. Each lower electrode includes a plurality of metal wire grid polarizers. The upper electrodes respectively correspond to the lower electrodes. An orthographic projection of each upper electrode and that of the corresponding lower electrode on the lower substrate form a ring-shaped electrode structure, and each upper electrode and the corresponding lower electrode are configured to receive voltages of different potential.