Japan Aerospace Exploration Agency (JAXA) plans to launch the small asteroid explorer "HAYABUSA2" in 2014, following the HAYABUSA mission. By improving the HAYABUSA probe, we are planning to visit the small asteroid "1999JU3", and aiming sample-return from an asteroid of different type from Itokawa. The 1999JU3 is a C- Type asteroid, considered to contain more organic or hydrated materials than S-type asteroids like ITOKAWA. The basic configuration of the spacecraft is mainly the same as HAYABUSA, with several minor modifications. The spectroscopic equipment and sampling system will be improved to be more suitable to C-type asteroids, because the surface of C-type asteroids is expected to differ from that of S-type ones. We will report the details of the sampling system of HAYABUSA2, and introduce our developing status of the sampling system.