The Leeuwin Current(LC) as the main route for the poleward transport of warm and low-salinity waters from eastern Indian Ocean regulates heat and salinity distributions among high-and low-latitude seas and precipitation over the west coast of Australia. Deciphering changes of the LC strength and the influencing factors in the past thus is important for understanding the regional and global climate change. In this study, the upper 63 cm sediments from core SO18588(28.38°S, 113.02°E; water depth of 812 m), which is 705 cm long and was recovered at the Leeuwin current region, were regarded as the study material. A total of 63 sediment samples were taken at 1 cm interval. We found that the relative abundance of tropical surface-dwelling planktonic foraminiferal species Trilobatus sacculifer could be better reflecting the LC strength than the relative abundance of tropical-subtropical surface-dwelling planktonic foraminiferal species Globigerinoides ruber at the coring site of core SO18588 by analysing the obtained sediment samples. Subsequently, we reconstructed the variations in the LC strength since 32 ka B.P. based on the relative abundance of T.sacculifer. By integrating the new record with the published paleo-oceanographic and-climatological records, we found the glacial-interglacial change of the LC strength is regulated by the sea level height and the mean state of El Niño -Southern Oscillation-like conditions. During the glacial, the declined sea level and the prevailing El Niño -like conditions resulted in the weakened LC. On the contrary, the rising sea level and prevailing La Niña -like conditions caused strengthening of the LC during the latest interglacial. The reduced LC strength may be attributed to weakened Australian winter monsoon and increased El Niño frequencies which was ascribed to the transition from La Niña -like pattern in the early Holocene to El Niño -like pattern in the modern between 9.5 ka B.P. and 0 ka B.P. The sudden weakening of the LC at around 9.5 ka B.P. may be related to flooding of the Karimata Strait and weakening of the Indonesian Throughflow surface flow with raised sea level.