Five pollen diagrams reveal palaeophytes and palaeoclimate changes during the Holocene in the North-West Yunnan Plateau of the Hengduan Mountains.The Holocene period can be divided into five stages,the vegetation and climate of each site have nothing in the common with each other. In the North-West Yunnan Plateau,swamp isn’t developed at the same time,the initial stage of swamp-forming is early period of the early Holocene,die out at late period of the middle Holocene.