To provide a heat-curing powder coating composition.

The heat-curing powder coating composition is obtained by having the heat-curing powder coating composition comprised of an alkyd resin, an acrylic resin, a polyester resin, an epoxy resin, a phenol resin, a melamine resin, a urea resin, a blacked isocyanate resin, a fluororesin, a silicone resin or an amide resin solely or in combination or in alloy dry mixed with 1-10 pts. wt. needle crystalline mineral having an average particle diameter of 1-30 μm based on 100 pts. wt. heat-curing powder coating composition.