Because of population extinction of wild formosan Sike deer (Cervus nippon taiouanus) in 1969, Kenting National Park launched a Sika deer restoration program in 1984. In the year from 1994 to 1997, Sike deer was released to the field. Currently, homerange of the deer has expanded to 4000 hectares. So, we put eyes on the sphere of activities about Formosan Sika deer and investigate into line transect survey. Therefore, we carried out the research in dry and wet seasons, finding 47 sites in five months of dry seasons and 44 sites in six months of wet seasons. The rain scouring may be the reason causing less number in wet seasons. For terrain, Sika deer prefer to choose crest line as their bedding sites, where provide broad eyesight and escape natural enemy easily. For gradient, the resting places in flat-place occupied higher rate, where is more comfortable for Sika deer. Furthermore, the condition of surface for Sika deer, the bedding sites of lawn and bare earth accounted for 50% respectively have higher rate. For the density of boscage, the sparse places has higher rate. Moreover, the vegetation for sida deer, preferring to choose deciduous forest not grasslands. In addition, they prefer to secret places where covered thicket as their shelter. Besides Sika deer prefer to high wind speed place. All of above show that Sika deer have about their bedding sites which has relationship with escaping natural enemies and the temperature control.