NOVELTY - A curable resin composition contains organic compound (b) (10-500 parts mass) having polymerizable unsaturated group and number average molecular weight of less than 1000, silicone microparticles (c) (0.5-50 parts mass) having number average particle diameter of 0.1-10 mu m with respect to 100 parts mass of resin (a) having number average molecular weight of 1000-300000. The ratio of silicon atom number of secondary siloxane bond with respect to silicon atom number of tertiary siloxane bond or quaternary siloxane bond is 250 or less.    USE - Curable resin composition is used for plastic-plate printing plate and laser-engraving printing original plate for laser-engraving printing plate (all claimed). Uses include but are not limited to organic electroluminescent element, organic solar cell, organic semiconductor, liquid crystal display element, plasma light-emitting device, optical element and optical waveguide.    ADVANTAGE - The curable resin composition provides printing plate having favorable mechanical strength. The liquid engraving dreg generated during laser engraving is removed easily from printing plate having curable resin composition.    DETAILED DESCRIPTION - A curable resin composition contains organic compound (b) (10-500 parts mass) having polymerizable unsaturated group and number average molecular weight of less than 1000, silicone microparticles (c) (0.5-50 parts mass) having number average particle diameter of 0.1-10 mu m with respect to 100 parts mass of resin (a) having number average molecular weight of 1000-300000. The silicone microparticles (c) have three-dimensional cross-linked siloxane structure. The ratio of silicon atom number of secondary siloxane bond with respect to silicon atom number of tertiary siloxane bond or quaternary siloxane bond is 250 or less. INDEPENDENT CLAIMS are included for the following:    (1) laser-engraving printing original plate, which has resin cured material layer having thickness of 0.1-10 mm obtained by hardening curable resin composition on sheet-form of cylindrical support component;    (2) laser-engraving printing plate, which has pattern formed on surface of laser-engraving printing original plate; and    (3) plastic-plate printing plate, which is formed by partially photocuring photosensitive resin composition by photoengraving process and in which pattern is formed.