By conducting the real ship test, combined with the comparison between actual application and traditional measuring method, the total station scanner is dominant in the measurement efficiency and the manual input.The equipment can be suitable for the deck construction condition, large in the effective measuring operating radius, high in the measurement precision, quick in the efficiency, low in the labor cost investment, intuitive in the data presentation form, and meet the related demands for the flatness deformation monitoring means of largearea deck to a large extent. Therefore, the equipment can be popularized and applied in the flatness deformation monitoring during the construction of same type area.