The present study examined the effect of skill level and task difficulty of a pistol aiming on postural stability and control strategy. Ten female expert pistol shooters and ten novice college students were tested in three experimental tasks; 1) looking at a target 3 m away 2) aiming at a target 3 m away, and 3) aiming at a target 10 m away. While the subjects performed the experimental tasks, the center of foot pressure (CP) on an AMTI force platform was measured. The results revealed the significant group effect indicating that the expert shooters had significantly better stability than control subjects. The effect of task difficulty did not reach the statistical significance. However, as the task difficulty increased, AP sway decreased and ML sway increased. These results suggested that the expert shooters used the different postural strategies. The expert shooters reduce AP sway to increase the shooting accuracy and increase ML sway to ensure postural stability.