The study aims to analyze the effect of internal and external factor in SWOT analysis on Islamic tourism’s potencyand arrange an appropriate development strategy that must to do by Islamic tourist attraction’s manager Destination Sharia In Sumatra Barat.The amount of the sample in the research is 150 respondents by using covenience oroppurtunity samplingtechnique. With using logistic regression, this research discover that Nagelkerke R2in amount of0,820, so that SWOT variable on internal and external factor can give contribution in amount of 82%. Based on that result, we can conclude that internal and external factor in SWOT analysis can improve the potency of Islamic tourism’s in Sumatra Barat, so that in this research, researcher would arrange strategies based on SWOT analysis.