Hani mire (42°11' ~ 42°14'N,126°28'~126°33'E) is a 16. 78km~2 mesotrophic to oligotrophic peatland and lies in west Changbaishan Mountain, Jilin Province, China. A single monolith (50x 10x 10cm) at 42°1331.93"N and 126°31'03.36"E, was dug out from the open area near the wooded zone in Hani mire. We conducted semi-quantified analyses on plant macrofossil remains,colorimetric humification and loss on ignition from the top 50cm stratigraphy of Hani mire to investigate wetness dynamics of the mire surface, and to test the sensitivity of plant macrofossils to continental climate change,with chronological support for age-depth modeling by ~(210)Pb assay and AMS 14C dating. In addition, we attempted to discern the dominant control on mire surface wetness. Semi-quantitative plant macrofossil analysis mainly followed the quadrat and leaf count protocol developed at the Southampton palaeoecology laboratory. Detrended Correspondence Analysis (DCA) was used to transform the raw floral data into latent indices of mire surface wetness, and the DCA ordination highlights the presence of a clear mire surface wetness gradient along axis 1. The correlation analysis shows there is a positive correlation between DCA axis 1 sores and humification (r = 0. 359,n = 50, p<0. 05),a positive correlation between DCA axis 1 sores and LOI (r = 0. 300, n = 50, p<0. 05) and a significant positive correlation between humification and LOI (r = 0.373,n = 50, p<0. 01). Several wet-shift phases that were identified from three proxies suggest wetter surfaces from 50cm to 34cm (ca.1834 ~ 1924A.D.),drier surfaces from 34cm to 22cm (ca. 1925 ~1982A.D.) and wetter surfaces occurred from 22cm up to 0cm (ca. 1983 ~2008A. D.),assuming that the ~(210)Pb dating is precise and accurate. The similarities among the three proxies imply a common origin of the variability, and they are interpreted in terms of changing effective precipitation since vertical movement of water in this area is dominant. Precipitation data from Jingyu meteorological station and wetness index for Changchun area suggest surface wetness dynamics inferred from climate proxies coincide well with precipitation data and documentary records. The wet periods were 37. 3%,dry periods 20. 9% and normal 41. 8% from 1834A.D. to 1924A.D. There were 12 wet years, 11 dry years and 7 normal years in 1925~1954A.D. The total annual precipitation was more than multi-year (1955 ~2008A.D.) mean annual precipitation, and higher precipitation in June, July and August accounted for 57.7% from 1955A.D. to 2008A.D. Moreover, most wet shifts (1963 ~1964,1971~1975,1993 ~1995,2001, and 2005) from 1955A.D. to 2008A.D. recorded by at least two of three proxies are supported by precipitation data or wetness index. But the data from Jingyu meteorological station show the summer temperature and mean annual temperature at wet shifts from 1955A.D. to 2008A.D. are high and low. So we conclude that mire surface wetness is driven primarily by precipitation, wetter mire surface corresponded to high summer precipitation and high annual precipitation. Plant macrofossil analysis has therefore significant potential to indicate climatic change in continental peatlands, because wet-shift dates recorded from plant macrofossils is consistent with instrumental data and historical literatures.