Abstract: Firstly,different aging experiments were employed to evaluate the aging properties of four kinds of Chinese-made low temperature resistant PVDF films and one kind of imported PVF film,including low temperature aging （-40℃，30 min）,hygrothermal aging （DH2000 h）,high temperature and high humidity aging （PCT96 h）,high and low temperature cycle aging （TC600）,high and low temperature cycle with moisture aging （HF20）,and UV resistant （UV250 kWh/m~2）.Secondly,the aging performance of the related low temperature resistant PVDF film back-sheets （KPC） were investigated for PCT48 h,TC50+HF10 and UV250 kWh/m~2 tests.Finally,the KPC back-sheets composed of usual PVDF films,low temperature resistant film and PVF film were used to make up photovoltaic modules,and the comprehensive aging performances are deeply researched under different conditions.The results indicate that the aging resistant level of some Chinese-made low temperature resistant PVDF films has reached that of the imported PVF film.The KPC backsheets with low temperature resistant PVDF films exhibited anti-aging ability.Some PV modules with low temperature resistant PVDF film KPC backsheets have showed a significant advantage over those with TPC backsheets.