To provide a cement mixing material package capable of directly adding a package filled with short fibers as a cement mixing material as it is, its manufacturing method, and a method for adding it to mortal and concrete.

The method for manufacturing the cement mixing material package is characterized in that the cement mixing material package where the cement mixing material containing short fiber is filled in a container formed by a packaging material made of a water soluble film arranging a water-disintegrable paper at the outside, and the cement mixing material containing moisture state short fiber is filled in the container formed by a packaging material made of the water soluble film arranging the water-disintegrable paper at the outside, and are accumulated and stored by sealing or without sealing an opening part of the container and volatilized until the moisture containing in the short fiber becomes 20% or less.