The efficiency of optical heterodyne detection is not only related to the atmospheric turbulence, but also related to the optical field distribution of the signal light and the local optical on the detector photosensitive surface. The influences of the atmospheric turbulence on that are studied when the signal light and the local optical field distributions are not the same, the change of the heterodyne efficiency along with the radius is disscussed. The conclusion shows that when signal and local optical field are Airy+Gauss model, the influence of turbulence on the heterodyne efficiency is minimum, and will not change along with the detector radius after the efficiency is maximum. The influence of the turbulence is biggest under the Airy+Plane wave model, even under the weak turbulence, the heterodyne efficiency falls very quickly, and the maximum value of the drop rate is 95.13%.