Compared with single beam, arrays beams which are composed of spatially separated beamlets are suggested to be used for scintillation reduction. Incoherent combined array laser can distinctly reduce intensity fluctuations and signal fades in active illumination and optical communications. Research progress of scintillations for kinds of laser array beams in atmospheric turbulence is depicted, including coherent and Incoherent combined array laser. In view of the advantage of incoherent combined array laser, the experiments of laser illumination and satellite laser communication have been summarized simply. And the means and results of kinds of beam arrays are described, including different wavelengths beam, fundamental Gaussian beam, partially coherent Gaussian beam and Airy beam. Problems that should be further studied are presented.