Power is a very important factor in decision making process,Organizationswhich apply different types of decision model reveal different performance.Bytaking the Taiwanese public-owned as well as private enterprises as samples.There are three kinds of decision models in public-owned and privateorganizations:Political Decision Model,Bureaucratic Decision Model,andRational Decision Model.Our findings show that:the family-owned businessesare more political decision oriented;the foreign businesses are rational decisionoriented,Although the public-owned organizations are rational decision oriented,they are more political decision and bureaucratic decision oriented than the others.To sum up,Higher-performance organizations tend to use rational decision model.On the other hand,the low-performance organizations tend to adopt non-rationaldecision models.