A liquid crystal lens comprises a first substrate and a second substrate which are aligned-and-assembled, and a liquid crystal layer disposed between the first and second substrates, the first substrate comprises a first transparent substrate base, and a first alignment film comprising first alignment grooves, the first alignment film is provided on the first transparent substrate base, the first alignment grooves extend to the edge of the liquid crystal lens in annular shapes with their geometric centers located at the geometric center of the liquid crystal lens, the second substrate comprises a second transparent substrate base, and a second alignment film comprising second alignment grooves corresponding to the first alignment grooves, and the second alignment film is provided on the second transparent substrate base, the liquid crystal layer is disposed between the first and second alignment films. The liquid crystal lens is applied to liquid crystal glasses.