This standard specifies the relevant content of organic coatings in the marine environment multi-factor combination simulation accelerated test, including test equipment and instruments, specimens, test conditions, test procedures, test records, data processing, result statement and test report, etc. It is suitable for the marine environment multi-factor combination simulation accelerated test of organic coatings to determine the damage effect under the combined action of direct solar radiation, chloride ion erosion, dry and wet alternation and other factors. The recommended test conditions are suitable for subtropical heat and humidity marine atmospheric environment. Miscellaneous marine atmospheric environment can be performed by reference.