The thin film bulk acoustic resonator(FBAR) technology has been applied widely to the wireless communications because of its high resonant frequency,high Q,low insertion loss and compatibility with IC process.The FBAR based sensors have the excellent features of high sensitivity,small size,good linearity,and easy to integrate,conforming to the main stream development trends of miniaturization,intelligentization and informatization in sensor’s realms. The current status and developments of FBAR sensors have been reviewed, and comparisons among QCM,SAW and FBAR sensors have been carried out in this paper.The FBAR sensor technology has been commented briefly, and the future trends of FBAR sensors have also been discussed.