Abstract: crystal are used as the gain medium and amplification medium to configurate the high performance lasers with extra-short pulses of femto-second level,high power output of 100 TW grade and wide tunning range.This paper summarized the new progress of Ti:Al2O3lasers based on CPA technique systematically,described the developing process of Ti:Al2O3lasers and the new important ad-vance.The Ti:Al2O3laser can be used as the extra-short laser pulse source to generate the extra-short X ray,or other applications.