The real-time, deterministic and reliability requirements of time-sensitive services in spatial information networks pose a huge challenge to traditional ethernet switching based on store-and-forward. An on-board time-sensitive network scheduling algorithm based on gate control is proposed, and a spatial deterministic ethernet switching scheme is designed. Aiming at the characteristics of satellite service burst, a gate control list generation method based on time division multiplexing is proposed, and the deterministic delay and delay jitter performance of the scheduling algorithm in the context of different traffic flows are simulated and analyzed. The simulation results show that the minimum delay of the proposed algorithm is reduced to the order of 10 μs, and the minimum delay jitter is 0, which meets the deterministic transmission requirements of space time-sensitive services and improves the deterministic, reliability, and flexibility of spatial information network service transmission.