Abstract: This study examines the roles/functions of the Dar es Salaam Stock Exchange (DSE) in safeguarding the investors of securities in Tanzania. The business of securities, both bonds and shares has taken a new dimension since its establishment in Tanzania. It has attracted many people of different cadre. However, some investors have been doubtful on whether they should invest or not. The doubts seem to be cemented on risk associated with investing. This study therefore, expounds the role of DSE through narrating measures that have been put in place for safeguarding the investors of securities. The study utilizes mixed methodologies of data collection with documentary and the use artifacts taking the leading role. The study concludes that there are measures that have been put in place through rules and regulations with the view to protecting investors of stock exchange. However, it is the investors’ responsibility to attain necessary information regarding the firms that sell bonds and or shares and studying, among others, the financial information of the firms so as to realize the performance and prospective opportunities of the firms.