The invention relates to a salt of a compound in a formula (I) as shown in the specification. The salt is crystal or amorphous phosphate or crystal or amorphous oxalate. By salification screening andresearching on the compound in the formula (I), a novel salt form suitable for medicine development is discovered, and medicine solubility is improved. Especially, a phosphate crystal form B is high in crystallinity and stability, low in hygroscopicity, great in oral bioavailability, high in tolerance in long-term administration, less prone to causing hypoglycemia and great in serum DPPIV inhibition effect, and accordingly better options are provided for medicine subsequent development.一種由式（Ⅰ）表示的化合物的鹽。所述鹽為結晶形式或無定形的磷酸鹽，或者是結晶形式或無定形的草酸鹽。本發明的發明人對由式（Ⅰ）表示的化合物進行了成鹽篩選和研究，找到了適於藥物開發的新的鹽型，提高了藥物的溶解度。特別是，本發明的磷酸鹽的晶型B具有高結晶度、低吸濕性和良好的穩定性，並且，磷酸鹽的晶型B的口服生物利用度好，長期給藥具有良好的耐受性，不易誘發低血糖，同時血清DPPIV抑制作用好，為藥物的後續開發提供了更好的選擇。
