The observations of comet 67P/C-G from the ground-based telescopes and from in-situ Instruments of Rosetta spacecraft / 林忠義 博士 (中央大學天文所) Abstract ======== ESA‘s Rosetta spacecraft has awoken from its long hibernation in mid-January 2014 and now is orbiting the comet 67P/Churyumov-Gerasimenko. The spacecraft will accompany the comet along its way to perihelion and beyond, monitoring the activity and releasing a lander to study the surface in-situ. I will summarize the monitoring results from the ground-based telescopes during its last perihelion passage (2009) and present the last observations (2014) of comet C-G. In parallel, the last images and preliminary results of comet 67P/C-G in-situ from Rosetta spacecraft‘s instrument, OSIRIS‘ camera, will also be presented.