Propagation properties of partially coherent Gaussian-Schell model beam, under the condition of considering the atmospheric turbulence of inner-scale and outer-scale, were studied in the atmospheric turbulence. Using the model of modified Von- Karmon spectrum which considers its inner-scale and outer-scale, the expressions of intensity distribution, wander variance and beam width of partially coherent beam were deduced in the atmospheric turbulence. The influence to partially coherent beam, on the turbulence along a slant path and a horizontal path considering the inner and outer scale, were analyzed in different turbulence intensity. The results show that, under the same condition, the anti-turbulence ability of the beam propagated in the atmosphere along a slant path is more better than the horizontal path. In addition, compared with the inner scale of the atmospheric turbulence, the outer-scales of the beam propagated in the atmosphere has a greater effect on the wander variance, the outer-scales have a minor effect on the intensity distribution and beam width, when the outer-scale increasing, wander variance is more serious. Furthermore, compared with the outer scale of the atmospheric turbulence, the inner-scales has more effect on intensity distribution and beam width. When the Inner-scales reduced, the beam expanding phenomenon is becoming more and more serious. Intensity distribution is more scattered, and inner-scales of wander variance almost has no effect.