NOVELTY - Manufacture of infrared-ray-impermeable zinc oxide-type microparticles involves heating solution (S) containing zinc compound and compound of metallic element (Md) which is capable of taking trivalence and/or tetravalence, and depositing zinc oxide-type particles containing zinc and metallic element as metal compound show zinc oxide crystallinity in X-ray-diffraction study. The content of compound (Md) is 0.1-20%. The atomic ratio of compound of metallic element (Ma) of monovalence or bivalence with respect to metallic element (Md) in solution (S) is 0.00001-1 (excluding 1).    USE - Manufacture of infrared-ray-impermeable zinc oxide-type microparticles used in composition for forming molded article, coating material and film. Uses include but are not limited to food packaging, agricultural film, windows for vehicles, garments, touch panel, recording paper for facsimiles, optical element, photo sensor, solar cell, bar-coating device material, etc.    ADVANTAGE - The method enables manufacture of zinc oxide-type microparticles having improved infrared shielding property and electroconductivity. The composition containing the zinc oxide-type microparticles has excellent transparency and infrared impermeability.    DETAILED DESCRIPTION - Manufacture of infrared-ray-impermeable zinc oxide-type microparticles involves heating solution (S) containing zinc compound and compound of metallic element (Md) which is capable of taking trivalence and/or tetravalence, and depositing zinc oxide-type particles containing zinc and metallic element as metal compound show zinc oxide crystallinity in X-ray-diffraction study. The content of compound (Md) is 0.1-20%, calculated using ratio of atom-numbers of compound (Md) with respect to total atom numbers of zinc compound and metalllic element. The atomic ratio of compound of metallic element (Ma) of monovalence or bivalence with respect to metallic element (Md) in solution (S) is 0.00001-1 (excluding 1). The solution (S) further contains 1.90-8 mol% monocarboxylic acid compound with respect to zinc, and 1-30 times amount of alcohol with respect to zinc oxide conversion weight of zinc compound.