The researcher aims to identify, through this study, the effect of critical success factors of business intelligence systems on accounting information systems, in addition to identifying the extent of integration effectiveness between the
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critical success factors of business intelligence systems to get benefit of it in supporting accounting information systems. and also the statistical analysis result showed that all of correlation coefficients is positive and function at level (0.01), and also the study reached a final result by refusing the zero hypothesis and accepting the alternative hypothesis which refers that there is a statistically significant relationship between all of critical success factors of business intelligence systems and accounting information systems and this by testing the hypotheses with Pearson correlation coefficient for every factor of critical success factors of business intelligence systems and its relationship with accounting information.