Power control is a key technique for resource management in wireless data networks. In order to get Pareto improvement for non-cooperative power control in wireless data networks, Stackelberg game was introduced to the power control game in wireless data networks, which makes all terminals in system work in the best equal signal-to-interference (SIR), a new distributed power control algorithm based on Stackelberg game (SPG) was presented and simulated. Numerical results suggest this algorithm can improve the capability of the system whose terminals enjoy higher utility and lower transmit power relatively. The algorithm also leads to more rational and impartial, and has good convergence.