Abstract: It is a new topic on the recycling of high grade asphalt pavement presently in china.Firstly,new recycling agents have been exploited successfully by many tests.Secondly, based on an old pavement projects,the performance and design method of recycled mixture of high grade asphalt pavement have been studied by many tests.The test results show that the performance of recycled mixture is dependent mostly on the proportion of old mixture and recycling agent.A new design method of recycled mixture has also been proposed.Finally,the construction method of recycled mixture according to its present status in our country is discussed.