Abstract: This paper proposes a validation method for China-made DSP，based on the architecture of XX-DSP, the ground test methods for DSP, and the typical features of the space environment. The hardware platform improves the system reliability by the introduction of the 1:1 hot backup. With due consideration of the ground functional test technique, this method validates all XX-DSP’s functional elements. Besides, with the consideration of the impact of the space environments, the total ionizing dose effects and the single event effects, this design records the single event upset (SEU) on the on-chip RAM and registers, and finally calculates the SEU rate. This design also detects the single event latch-up (SEL). At last, by running the typical application program with the FIR filtering algorithm, its systemic functions and the space environmental adaptability are validated.