With rapid development of modern industry in China

the requirement for the performance

stability and reliability of related electrical equipment（such as capacitor）is higher.Dry type metallized film capacitor is a kind of capacitor with good safety and stability

of which the recent study is widely

particularly the operation stability study is of interest.In this paper

the study in the field of reliability of metallized film capacitor involving material aging and self-healing etc of the metalized film is summarized

such issue as self-healing mechanism and application of the metalized film

the material aging mechanism and life evaluation model ect are discussed deeply

which provides theoretical base for the optimal design on reliability of the capacitor and provides operation reference for the related engineers.