The recent system construction, data acquisition and application, system status monitoring and fault prediction, verification and validation of the PHM technology are summarized. Then, according to the current engineering application of equipment PHM technology, the development and application bottlenecks of military aircraft PHM technology are analyzed from the aspects of equipment test design and verification, multisource fault information acquisition, interaction and management, remaining service life prediction and maintenance decision of aviation parts, verification and validation and standard development. And it is pointed out that the research on the technologies of testability demonstration, intelligent information processing and fusion, standardized management of aviation equipment and information, data mining and platform construction and so on should be carried out. Finally, some research ideas and development trends of domestic PHM are given.