The study analyzed the cash flow and external funding in focusing on the relationship of the two factors in Korean hospitals and some changes in the relationship. The results analyzing this study were summarized as follows: First, the discriminant function of new external funds was generally the ratio of cash flow from operating activities to sales, the ratio of cash flow from investment activities to sales, the ratio of cash flow from financing activities to sales in order. The prediction rate of total discriminant function was more than 92%. Second, in case of Korean hospitals, it was known that the ratio of cash flow from operating activities to sales, particularly the net income to sales was the biggest influencing factor on the decision to external funding.