PURPOSE: To make the laying work of a stone pitched block of every kind independent to enhance working efficiency, to enable the work for producing the stone pitched block without directly using a form and to speed up laying work in such a state that stone materials are easily set and fixed on the self-adhesive layer applied to a plate like sheet.

CONSTITUTION: A self-adhesive layer 3 is applied to the surface of a plate shape sheet 2 cut into a shape forming a stone pitched block of every kind and required stone materials 5 are arranged on the self-adhesive layer 3 so as to provide joint parts 15 and a soft coagulant 4 is injected in the joint parts. Thereafter, mortar and concrete are cast in a form. After the cast object is demolded from the form, the plate shape sheet 2 and the coagulant 4 are together excluded to develop the stone materials 5 on the surface of the cast object.