Abstract: A calcium phosphate base particulate compound is provided which satisfies (a) 20?Sw?300 (BET specific surface area (m2/g); (b) 1?Tg?150 (heat loss (mg/g) per 1 g of calcium phosphate from 250 to 500° C.); (c) 0.005?Dx50?0.5 (cumulative 50% average diameter (?m) counted from larger particle side based on the observation by TEM); and (d) 1.5?Dx50/?x?20 (?x: standard deviation {In(Dx16/Dx50)}) The calcium phosphate base particulate compound of the present invention is excellent not only in particulate evenness and dispersibility but in thermal stability, and gives a resin composition excellent in anti-blocking property, a resin composition excellent in printing suitability, and a food composition such as good taste calcium-enriched milk with less precipitation.