The optical frequency comb (OFC) has experienced more than 20 years of rapid development since 1999. From the initial laboratory system to the widely used high-tech products, the optical frequency comb based on femtosecond laser has played an irreplaceable role in many frontier research fields, such as frequency metrology, ultrafast spectroscopy, optical frequency standards, generation of attosecond pulses, and multi-pulse time domain synthesis. Especially after the femtosecond Ti: sapphire laser frequency comb and the femtosecond fiber laser frequency comb, the all-solid-state femtosecond laser frequency comb directly pumped by diode laser has attracted the interest of many research groups and made a series of meaningful progress because it has the common advantages of low noise, high repetition rate, compact structure and high electro-optical efficiency. This review summarizes the development and typical applications of all-solid-state optical frequency combs, and looks forward to the future development of all-solid-state optical frequency combs based on the research results achieved by the authors research group, so as to provide reference for the development of all-solid-state femtosecond mode-locked oscillators.