The space orbital game involves the control problems of the spacecraft in the complex space environment. This paper addresses the fuel optimization problem of the escaper in multi-spacecraft orbital games and proposes an adaptive control strategy based on potential field functions. By establishing a dynamic game model of the chaser-escaper, the chaser is modeled as a repulsive source, and the repulsive field generated by the potential field function is used to determine the escaper's escape direction. Different from the fixed acceleration strategy, this method designs an adaptive adjustment mechanism based on the relative motion state to dynamically optimize the escaper's acceleration magnitude. Numerical simulation results show that within the specified confrontation time threshold, this strategy can ensure that the escaper maintains a safe distance and is not captured, while reducing fuel consumption by 13.2% compared to the full acceleration escape scheme.