Abstract: When it is forced to initiate by instability, convection can influence on wind, humidity and temperature and instability of circumstance by vertical transportation. To analyze the effect of convection, we design two cases: one is the dry process and the other is the moist process. The unstable energy is different in two processes, making different effects. From the study we draw some conclusions: When convection is strong, the moist adjustment can enhance the convergence in the bottom layer and the divergence in upper layer more than the dry adjustment. When the convection disappears, the two processes have the same effect on the wind. The moist adjustment has a greater vertical velocity. The moist adjustment can increase temperature more in the lower atmosphere and decrease it more in the bottom atmosphere than the dry adjustment. The dry and moist processes both release instability. When the conditional instability is released, the convergence in the middle and bottom layers and divergence in the upper layer will enhance at the center of the updraft motion; When the conditional symmetric instability is released, the south wind will increase in the bottom layer and weaken in the middle and upper layers at the center of the updraft motion. The change of horizonal wind by the effect of convection is comparable with its original quantity. The release of instability can affect the ambient within 500km around the center of the updraft convection. The release of instability can also change the temperature around the convection, which will increase the temperature in the upper layer and decrease the temperature in the lower layer.