The purpose of this study is to examine the factors influencing performance of change control, management review and flexibility in the software company with innovativeness. This model tests various theoretical research hypotheses relating to performance of software company, change control, management review, flexibility and innovativeness. Valid 100 questionnaires have been collected within two months of 2010. EXCEL, Smart PLS(Partial Least Square) 2.0 and SPSS 15.0 have been utilized for deriving the study results. The results of hypothesis testing are as follows. First, change control and management review positively influences flexibility. Second, flexibility positively influence performance of software company. Finally, change control to flexibility for low group of innovativeness is significantly larger than those for high group of innovativeness. But management review to flexibility for high group of innovativeness is significantly larger than those for low group of innovativeness. The results of this study will provide various implications on performance of software company.