Abstract: The stuffed shield installed outside the spacecraft for protecting against the space debris is generally made of fibers of both high strength and high modulus such as Nextel\Kevlar. The performance of six kinds of shields with different stuffed materials (Nextel\Kevlar fiber, aerogel\glass fiber composite, wood plate, polyurethane foam, aluminum plate and glass fiber reinforced plastic plate) of the same areal density are investigated by hypervelocity impact tests. The diameter of the projectiles ranges from 4.0 mm to 5.5 mm, and the impact velocity is set between 3.0 km/s and 5.0 km/s. The preliminary results show that the fiber stuffed shield enjoys a higher shielding capability for a higher impact velocity (about 5 km/s) injection, but performs poorly for projectiles with a lower impact velocity (about 3 km/s), as compared with the aluminum stuffed shield of the same areal density. The wooden shield performs well under both conditions. The above result, together with preliminary analysis of the protection mechanism, may provide some food of thought for the optimization design of the stuffed shield.