A method for the generation of 2×2 optical ring lattice array by coaxial superposition of Laguerre-Gaussian beams is proposed. The formation and distribution characteristics of optical ring lattice array are discussed in theory, then optical ring lattice array is produced by numerical calculation. The hologram of optical ring lattice array is generated by conjugate-symmetric extension based Fourier computer-generated holography, and the optical ring lattice array is experimentally produced based on a reflected-type spatial light modulator. Excellent agreements between theoretical and experimental results are observed. Optical ring lattice array provides more controllable parameters and more complicated light distributions, so the research results provide some theoretical and experimental foundations for atom trapping of light beams.