In order to study the different influences of the atmospheric turbulence on target scattering echo signals,based on the Gauss beam model,the field distribution of the return path for the different targets are derived by the Rytov method and the generalized Huygens-Fresnel principle.The scintillation of the echo signals is detected for the high-repetition-rate laser scattered by diffuse surface,retro-reflectors and the ‘cat-eye’ targets in weak atmospheric turbulence.By processing the experimental data,the influence differences of atmospheric turbulence on three target scattering echo signals under the same circumstance was obtained.The possible reasons for these features are qualitatively analyzed.All these results provide an important basis for the target classification and recognition in the application of laser active detecting systems.