The study addressed the investments of insurance companies listed market Damascus Securities Exchange, and its impact on the performance of the market to know how much they contribute to the improvement of Damascus Securities Exchange performance through the study of the relationship between the size of the investment represented by turnover of the shares of insurance companies listed in Damascus Securities Exchange and Index Damascus Securities Exchange, During the period 1-1-2010 until 31- 12-2014 in order to improve and raise the level of the insurance sector as an important investment sectors in the national economy.