The inspection methods for metallic coating porosity are reviewed and evaluated in the NF EN ISO 10308-2006 porosity inspection review standard. The porosity of metallic coatings has a significant impact on their performance such as corrosion resistance, durability and Mechanical Properties. The standard reviews the porosity detection methods of metallic coatings to ensure their accuracy, repeatability and suitability, especially in the application of different types of metallic coatings. Through the review and analysis of existing inspection methods, the standard provides more rigorous and standardized testing guidelines for related industries, which helps to improve the quality control level of metallic coatings.