The purpose of this study is to predict the supply and demand trends of dermatologists manpower in Taiwan in 2009-2030 by using GM(1, 1 ) model of Grey System Theory. We found that, the supply of dermatologist manpower exceed demand about 11.3% in 2009. Every dermatologist severed 30570 people in 2007. But every dermatologist will server only15467 people in 2030.