NOVELTY - Preparation of microporous conductive composite microspheres involves mixing butanol and water at volume ratio of 1:4 to obtain dispersion medium; dispersing styrene and divinylbenzene monomer in dispersion medium; stirring to form oil/water emulsion; adding polyvinyl pyrrolidone; stirring to form oil/water emulsion; adding azobisisobutyronitrile; polymerizing at 40-90 degrees C to obtain microemulsion; putting microemulsion, conductive metal rod/metal powder coated microspheres, and metal ion salt into polymerization reactor; and polymerizing for 2-48 hours.    USE - Preparation of microporous conductive composite microspheres used as electrode for gas sensitive sensor, electrode material or catalyst material for lithium-ion battery, or as fuel cell electrodes.    ADVANTAGE - The method produces microporous conductive composite microspheres with large specific surface area, has metallic property and metal oxide catalytic properties, and can accelerate chemical reaction rate.    DETAILED DESCRIPTION - Preparation of microporous conductive composite microspheres comprises mixing butanol and water at volume ratio of 1:4 to obtain dispersion medium; dispersing styrene and divinylbenzene monomer in dispersion medium at weight to volume (W/V) percentage of 20-40%; ultrasonic or high-speed stirring to form strong oscillation of oil/water emulsion; adding emulsion with 0.2-5.0 vol.% polyvinyl pyrrolidone as dispersant; ultrasonic or high-speed stirring to form oil/water emulsion; adding 0.5-2.0 vol.% azobisisobutyronitrile as initiator; polymerizing at 40-90 degrees C to obtain microemulsion; preparing electrically conductive metal rod/metal powder coated microspheres using silver, gold, copper, nickel, palladium, or platinum metal powder; putting microemulsion, 1-25 mass% conductive metal rod/metal powder coated microspheres, and 20-40 mass% metal salt ion into polymerization reactor; adding alkali to adjust pH at 9-12; polymerizing for 2-48 hours; aging for 2-24 hours; filtering to obtain porous composite microspheres; putting microspheres in furnace; heating under protection of air, nitrogen, or hydrogen at 10-30 degrees C/minute at 80-750 degrees C for 2-48 hours; gradually cooling at room temperature at 10 degrees C/minute to obtain microporous conductive composite microspheres with diameter of 10 mu m to 3 mm.