NOVELTY - Continuous manufacture of metal microparticles involves introducing a to-be-processed fluid between primary processing surface and secondary processing surface, separating the secondary processing surface from the primary processing surface using the pressure generated by to-be-processed fluid, maintaining a micro-space between the primary and secondary processing surfaces, forming a thin film fluid by passing the to-be-processed fluid through micro-space, reacting metal ions and reducing agent contained in the thin film fluid, and precipitating metal microparticles.    USE - Continuous manufacture of metal microparticles e.g. nickel microparticles, iron microparticles, cobalt microparticles, and chromium microparticles used for electroconductive curable composition used in formation of electronic component e.g. discrete component, chip component, and circuit board of electronic device (all claimed) e.g. solar cell.    ADVANTAGE - The method enables continuous manufacture of metal microparticles, which provides electroconductive curable composition with excellent discharge property and reliability.    DETAILED DESCRIPTION - Continuous manufacture of metal microparticles involves introducing a to-be-processed fluid as liquid phase between primary processing surface and secondary processing surface capable of opposing and rotating with respect to each other using a supply flow channel such that separation is possible, separating the secondary processing surface from the primary processing surface using the pressure generated by to-be-processed fluid due along direction with respect to movement of force, maintaining a micro-space between the primary and secondary processing surfaces using the force, forming a thin film fluid by passing the to-be-processed fluid through the micro-space, reacting metal ions and reducing agent contained in the thin film fluid, and precipitating metal microparticles. The to-be-processed fluid is primary to-be-processed fluid containing aqueous medium of pH-adjuster and reducing agent having pH of 8-13, or secondary to-be-processed fluid containing aqueous medium of metal salt having pH of 3-7. The pH of primary to-be-processed fluid is higher than the pH of secondary to-be-processed fluid. The pH of the thin film fluid is reduced to 5-12 due to the precipitation of metal microparticles. The metal microparticles have conical protrusion protruding in several radiating shapes and conical protrusion in the form of triangle having an apex angle of 10-40 degrees along side surface in transmission electron microscope photograph. The conical protrusions are closely or mutually contacted with the root. The metal microparticles have an average particle diameter of 0.01-10 mu m. The CV value of particle size distribution of the metal microparticles is 100% or less. An INDEPENDENT CLAIM is included for electroconductive curable composition.