PROBLEM TO BE SOLVED: To provide a solution to a problem that in a conventional vitamin C-containing composition the incorporation ratio of vitamin C into the excipient dextrin or starch can be incorporated only a few percent level in terms of wt.%.SOLUTION: Provided is a powdery vitamin C-containing composition in which a dietary fiber and vitamin C obtained from camu camu fruit juice as well as animal calcium raw materials derived calcium fine-particles are incorporated, as well as in which the grain size d50 of the calcium fine-particles is 50 nm to 500 nm and the content of vitamin C is 20 wt.% or more.
