A cavity-dumped Kerr-lens Mode-Locked (KLM) Ti:S laser is demonstrated with an all solid-state continuous-wave 532nm laser as the pump resource. Stable mode-locked laser pulse with a peak power of 4.5MW was obtained under 5.4W pump power. The pulse duration width is shorter than 18fs and the repetition rates can be tuned as low as 20kHz. To our knowledge, this is the lowest repetition rate and the most compact size from the solid-state cavity-dumped femtosecond laser.