Phased array radar seeker has the excellent advantages of anti-stealth and anti-jamming， which is the focus and hotspot of precision guidance technology research at home and abroad. It is developing rapidly towards the direction of high integration， ultra-wideband， multi-function， and intelligence. Combining with the current advances of phased array radar seekers， this article expounds the developing course of phased array radar seekers and the research status of phased array radar seekers all over the world. The characteristics and advantages of phased array radar seeker technology are analyzed in detail from multiple aspects， and the development directions and application prospects of phased array radar seekers in multiband/broadband， conformal， multi-channel array， intelligent， and other aspects are prospected. With the popularization and application of phased array guidance technology， the performance of precision guided weapons will be greatly improved.