Abstract: Fiber lasers have grown rapidly for their unique advantages, which become very competitive in many applications such as industrial processing, defense and military, medical and other fields. The progress of continuous wave and pulse Yb-doped double-clad fiber laser at home and abroad was reported. All-fiber lasers with combiners and fiber gratings were introduced. Simultaneously, pulse fiber lasers with high beam quality, high average power and high peak power based on master oscillator fiber power amplifier technology were presented. The influencing factors of increasing power of fiber laser, including damage of the optical fiber, nonlinear effects, thermal effects, were analyzed. Finally, the development trends of the Yb-doped double-clad fiber lasers were predicated.