Abstract: To resolve the transferring problem of neutron activated Cu sample on prototype, a “rabbit” system has been researched and designed. The problem of smoothly transfer, locating of the “rabbit”, lubricating and air-tight sealing between the pipe and “rabbit” are resolved. The experimental result shows that the “rabbit”has been successfully transferred 14.3 m within 1.12 s, and the average velocity of the “rabbit” is 12.8 m/s. In the same condition, the theoretical curve and the experimental curve of the “rabbit” movement characteristic fit very well, which means the design of the “rabbit”syst em is successful．