Abstract: For studying the axial intensity distribution of limited Laguerre-Gaussian beams in turbulent atmosphere, the axial intensity expression of the Laguerre-Gaussian beams limited by a circular aperture in atmospheric turbulence was obtained based on expanding Huygens-Fresnel principle. The theoretical axial intensity under conditions of different intensity of turbulence, wavelength and transmit aperture was simulated by means of MAPLE. The results indicate the axial intensity increases obviously in the near-field, after it reach the largest and then begin to decrease obviously when the Laguerre-Gaussian beams in vacuum or low atmospheric turbulence. The axial intensity is attenuated rapidly as the Laguerre-Gaussian beams propagate close quarters in rather strong atmospheric turbulence under different intensity of turbulence, wavelength and transmit aperture. Which were compared with that in vacuum. This result is helpful in studying Laguerre-Gaussian beams.