The present invention is anti-itching powder that blocks transmission to stratum corneum and invasion up to epidermal cells by emulsion as a result of further concentration on skin stratum corneum. The emulsion is produced by mixing sweat continuously secreted during rest and sebum. The emulsion becomes a cell disorder composition. Specifically, the anti-itching powder as a fine powder contains main ingredients of aluminum chloride or alum and cyclodextrin. A fine powder as a base is dispersed into and combined with the fine powder. The application of the fine powder over the skin prevents sudden itch without blocking emission and transpiration of moisture in the sweat from the skin stratum corneum.