The oxalic acid disassembly activity which several times is higher than the lactobacillus which possesses the oxalic acid disassembly activity which is known until recently the lactobacillus and its use which it possesses are offered. The feces and the gastric fluid of the human adult compared to from the Lactobacillus being attached lactobacillus 132 strain which is separated into the individual, oxalic acid the disassembly possible lactobacillus the screening was done in large quantities. As a result, in the culture solution which includes 10mM oxalic acid, the lactobacillus which features that oxalic acid disassembly ratio is 50% or more when starting the 37 and the culture at the time of pH6.5 and 72 hour culturing, was discovered.従来知られているシュウ酸分解活性を有する乳酸菌よりも数倍高いシュウ酸分解活性有する乳酸菌およびその用途を提供する。ヒト成人の糞便及び胃液より独自に分離したLactobacillus属乳酸菌132菌株から、シュウ酸を大量に分解可能な乳酸菌をスクリーニングした。その結果、10mMシュウ酸を含む培養液中で、37℃、培養開始時pH6.5、72時間培養において、シュウ酸分解率が50%以上であることを特徴とする乳酸菌を見出した。