Khanka Lake (44°32'?45°24'N,131°59'~ 132°51'E) crosses the Sino-Russia boundary, is located in Heilongjiang Province and three hundred kilometers away from the Sea of Japan. The climate is typical humid to semi-humid and temperate controlled mainly by East Asian monsoon. The level of Lake Khanka has fluctuated many times since Quaternary and the Small Lake Khanka was formed after the last regression. Besides four water channels between Small and Large Khanka Lake, there are many rivers flow into the Small Khanka Lake,such as Jinyinku River, Chengzi River, Kanzi River et al. We collected a 6m-long sediment core (XKH1,45°21. 493'N, 132°25. 356'E) from the Small Lake Khanka at 2.5m water depth. The sediments are mainly composed of silt with several sandy silt intercalations. The sediments color is olive gray and grayer black except for the sallow sediments from surface to 115cm, and black to gray black sediments at layers of 229 ~ 240cm and 463 ?492cm. 257 samples (2-cm intervals) and 54 samples (10-cm intervals) were collected for grain size and total organic carbon and nitrogen (TOC,TN) analysis, respectively. 231 samples were collected by cubic plastic boxes (2cmx2cmx2cm) at 2cm intervals for paleomagnetic analysis. The chronological frame of Core XKH1 is obtained by comparing the geomagnetic inclination lows recorded in XKH1 and Lake Biwa. Multi-proxies of grain size, total organic carbon and nitrogen (TOC, TN), magnetic susceptibility (MS),and color reflectance are used for paleoenvironmental reconstruction in Lake Khanka since the last glacial maximum (LGM). From 24ka B.P. to 19.5ka B.P., Lake Khanka experienced low water-level and cooling-wet climate evidenced from the low mean grain-size, a* (<0), TOC (0. 3% ~ 0. 7%) and high sediment brightness (ca.41) and MS (ca. 11 x 10~(-8)m~3/kg) values. High TOC content (>3%) and significant variation in others proxies suggested near-shore swamp deposition environment during 19.5ka B.P. and 18.4ka B.P., which may be associated with lower precipitation modulated by the restrained East Asian summer monsoon (EASM). From 18.4ka B.P. to 15.lka B.P., the lake level became lower, as indicated by large amount of plant debris and high-fluctuated sand content. During the deglaciation, the effective precipitation increased around Lake Khanka with global temperature rising, lead to rising lake level. The fluctuating characteristics of the environment-sensitive grain-size component correspond well with the Oldest Dryas/Bolling-Allerod/Younger Dryas. The lake level slightly declines since 10.6ka B.P. under warm-climate condition, due to the development of sand barrier between the small Khanka and the main catchment area. Between 3.80ka B.P. and 0.58ka B.P., climate became dry indicated by obviously increased a* value and tawny nodules in worm burrow which can be explained by weak EASM during this time period. The environment sensitive grain size (9.29~63.00mum) is retrieved by grade-standard deviation method. This proxy can indicate the precipitation of the study area.