Abstract: The stability of bio-oil is very important for its applications. This paper introduces the aging mechanisms of bio-oil and various methods to improve the stability of bio-oil，including drying，deashing，hot-gas filtration，vapor-phase catalytic pyrolysis，adding solvent and mild hydrogenation，etc. Various factors，such as original properties，application and process cost，should be taken into account when choosing an optimized scheme from these methods.

摘要： 稳定性对生物油的应用十分重要。介绍了导致生物油不稳定的机理和各种提高生物油稳定性的方法，如原料干燥、酸（水）洗脱灰、气体高温过滤、气相催化裂解、添加溶剂和生物油适度加氢等。从这些方法中选择合适的提高生物油稳定性的方案需要从生物油的初始性质、应用范围和处理成本等方面进行综合考虑。