1, the spacecraft cabin is equipped with a special respiratory protective mask. When a spaceship fires, astronauts should first put on breathing masks to ensure their own safety, and then put out the fire.

2. In space, the law of combustion is different from that on the ground: because there is no gravity, air cannot form convection, combustion will be confined to a small area, or smoldering (slow combustion without flame) will occur. Therefore, to a certain extent, microgravity environment is conducive to fire fighting.

3. In case of a small fire, astronauts can put out the flame with fire gloves; If the fire is serious, special fire extinguishing agent can be used to put out the fire. For a large manned spacecraft with multiple cabins (such as a space station), the burning cabin can be temporarily isolated, and carbon dioxide can be discharged into the cabin by using a carbon dioxide pipeline to suppress and eliminate the fire. Emergency decompression of engine room is also a fire extinguishing scheme. There is no oxygen after decompression, so it will not burn naturally. However, it must work with the in-cabin spacesuit and the in-cabin pressure emergency system. After the fire is put out, a small amount of toxic substances will generally remain in the cabin, so it must be discharged and disinfected.