The invention relates to a method for evaluating the life by simulating an artificial accelerated ageing experiment in a heavily contaminated area. The method is characterized by comprising the following steps: (1) carrying out laboratory sample preparation on an anti-pollution flashover coating, carrying out vulcanization for 72 hours, taking out a specimen, cutting the specimen as a sample, andcleaning the surface of the sample by virtue of absolute ethyl alcohol and deionized water; (2) after the surface of the sample is dried, adding diatomite as insoluble dirt and sodium chloride as soluble dirt into water so as to prepare a dirt solution, and coating the sample with the dirt solution by virtue of a quantitative brushing method, wherein the salt density and dust density of a dirt layer are selected according to a salt density value and a dust density value of the local heavily contaminated area; (3) after the dirt layer is dried, putting the dirt layer into a thermal ageing device, and respectively carrying out thermal ageing test experiment on the dirt layer for one month, two months and three months; and (4) after the experiment is finished, taking out the sample, testing various performances, and determining the expected life of the aged sample according to testing results.