Gravitational wave is called gravitational radiation, predicted by Einstein to exist on the basis of general relativity, is an important content of basic physics and astronomy. Human has made hard effort over the past few decades to explore the gravitational wave. From the bar detector in the early to the laser interferometer gravitational observatory, academic institutions and the scientists from the different countries adopt the most advance technology to find sources of gravitational wave constantly. The detection range and the sensitivity of the detector are increasing continuously. A new subject of gravitational astronomy has come into being in the process of detection. People can know the mysteries of the universe gradually, to fund the operation laws of the cosmos. The gravitational wave has become the emphases of scientific and academic and hot topic at present.