Abstract: The consists characteristic of the common approaching and landing system,the consists and application of other country landing system on aircraft carrier are introduced. For the improvement of the security and reliability of landing on the aircraft carrier,by analysing virtue of long rang detection, high tracking precision and stabilization, the feasibility of phased array radar as landing equipment is studied. In the end, development trend is given of union landing system by dual band radar and JPALS, and it is pointed that this system have broad application.