Plating adhesion evaluation device, plating adhesion evaluation method, alloyed hot-dip galvanized steel sheet manufacturing equipment and alloyed hot-dip galvanized steel sheet, capable of more accurately measuring the amount of Γ·Γ1 phase generated and more accurately evaluating the plating adhesion of alloyed hot-dip galvanized steel sheet It provides a method of manufacturing. The plating adhesion evaluation apparatus according to the present invention includes an X-ray diffraction intensity measuring unit for measuring the X-ray diffraction intensity of a Γ·Γ1 phase on an alloyed hot dip galvanized steel sheet by an X-ray diffraction method, and the measured Γ·Γ1 phase. An evaluation unit for evaluating the plating adhesion of the alloyed hot-dip galvanized steel sheet is provided on the basis of the X-ray diffraction intensity and the weight per galvanized unit area.
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