The femtosecond optical frequency comb is becoming an increasingly valuable research field in laser optics. In recent years, all polarization-maintaining (PM) fiber-based lasers and optical frequency combs have achieved rapid growth owing to the continuous improvement of both PM-fiber and device fabrication technology. Herein, the development of all PM-fiber-based optical frequency combs is reviewed from a technical perspective. First, the basic principle, framework, and key components of an optical frequency comb are briefly introduced, and each key technology of the frequency comb, such as self-started mode-locking, is discussed. Second, several methods for pulse amplification and pulse compression are described, such as chirped-pulse amplification, nonlinear amplification, and divided-pulse amplification. Third, supercontinuum generation and self-referenced interferometry technology related to carrier phase offset(f0) locking are introduced, and the f0 signal with a signal to noise ratio (SNR) as high as 40 dB is experimentally demonstrated. Finally, the methods for locked repetition frequencies(fr) and f0 signals are illustrated.