The ISO 11998:2006 standard defines a method for determining the moisture scruf resistance and cleanability of coatings. This method is used to evaluate the ability of coatings to withstand wet scruf cycles and dirt infiltration. The standard specifies accelerated test conditions and specified wet scruf methods to ensure Reliability of test results. Although the tolerance of coatings is influenced by a variety of factors such as the substrate, application method and drying conditions, this method is able to provide an effective assessment of the performance of coatings in practical applications.