NOVELTY - Manufacture of metal-microparticles dispersed-composite (10) involves forming solid frame portion (1a) having three-dimensional meshwork structure by preparing slurry containing ceramic microparticles, preparing coating liquid by mixing metallic compound with slurry, applying coating liquid on base material, drying, forming coated film, depositing particulate-form metal by carrying out heat-reduction of metal ion of metallic compound, while forming matrix layer (1) provided with gap (1b), and heat-processing coated film.    USE - Manufacture of metal-microparticles dispersed-composite used for fuel cell, air cell, water-electrolysis apparatus, electrical double layer capacitor, gas sensor, exhaust-pollution removal apparatus, optical modulation device, electronic devices, dew condensation sensor, humidity sensor, biosensor and chemical sensor.    ADVANTAGE - The metal-microparticles dispersed-composite is manufactured efficiently with dispersibility, by simple method.    DETAILED DESCRIPTION - Manufacture of metal-microparticles dispersed-composite involves forming solid frame portion having three-dimensional meshwork structure by preparing slurry containing ceramic microparticles as raw material of solid frame portion, preparing coating liquid by mixing metallic compound as raw material of metal microparticles (3) with slurry such that the content of metallic element is 0.5-480 pts. wt. with respect to 100 pts. wt. slurry, applying coating liquid on base material, drying, forming coated film, depositing particulate-form metal obtained from metal microparticles by carrying out heating-reduction of metal ion of the metallic compound, while forming matrix layer provided with gap, and heat-processing coated film. The primary particle diameter and secondary particle diameter of the ceramic microparticles is 1-25 nm and 100 nm to 2 mu m, respectively. The average particle diameter of the metal microparticles is 3-100 nm. 60% Or more of metal microparticles have particle diameter larger than primary particle diameter and less than the secondary particle diameter. The metal-microparticles dispersed composite has matrix layer with gap including solid frame portion, and metal microparticles fixed to solid frame portion. An INDEPENDENT CLAIM is included for metal microparticles-dispersed composite.    DESCRIPTION OF DRAWING(S) - The drawing shows schematic view of metal-microparticles dispersed-composite.    Matrix layer (1)    Solid frame portion (1a)    Gap (1b)    Metal microparticles (3)    Metal-microparticles dispersed-composite (10)