Peking University is the only university in China developing SRF physics and technology. These activities started in 1988. Researches include cavity fabrication arts, cavity surface treatments and SRF thin films. During passed years, a series of cavities were made which include the first Chinese made 9-cell cavity, the first LG 9-cell cavity, the first Spoke cavity and 3.5cell cavity for DC-SC injector. Now, the home made DC-SC injector is being conditioned.