ABSTRACT  Indonesia has been worldwide known as a high risk country for natural disaster. Any potential natural disasters can happen in this country. However, in the disaster management,  especially in  the  prevention  and  preparedness,  Indonesia  is  a low  category  country.  Following  that problem,  the  writer  interested  in  doing  a  research  with  the  subjuct  “Evaluation  to  the Performance  of BPBD -  Prevention  and Preparedness  Section  at Badung  Regency  of Bali Province in the year of 2014.  This research use the qualitatif descriptive methodology. And this research is using the Performance Theory by Agus Dwiyanto. To Obtain the data, the writer do some direct observation on fields and also do some deeply interviews with the reliable source which  related  to  the  performance  of  the  BPBD  Badung.  From  the  Observation  and  the interviews, the writer found that generally the performance  of BPBD Badung is good. It works well because of the great supporting  elements but it is unavoidable  there are some resister elements. Comes from that, BPBD Badung was expacted to be more creative and innovatif in increasing their performance. They also need to increase their productivity, quality service, responsivity,  responsibility  and accountability  to obtion  excellent  performance  in accordance with LAKIP BPBD Kabupaten Badung. The use of any available resource is expected to be well and wisely. So finally the disaster reduction with society based achieved and to create a tough and reliable Badung.  Keywords: Evaluation, Performance, Disaster prevention and preparedness.