The present invention relates to a prefabricated terrazzo protector of a staircase that facilitates the installation work of a prefabricated terrazzo, which is prefabricated on the stair foundation of a concrete building, and protects the tip of the terrazzo after construction. In the horizontal and vertical terrazzo to finish the construction,;A cover body fixedly attached to the protruding state so as to be horizontally formed with the upper surface of the horizontal terrazzo while the upper and lower anchor pieces embedded at the front end of the horizontal terrazzo are integrally formed; The assembly space is formed on the bottom side of the cover body to surround the upper end of the vertical terrazzo when the horizontal terrazzo installation.
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