All-solid-state high-repetition frequency electro-optical Q-switched lasers are widely used in many fields such as lidar, laser ranging, laser precision machining, and optical communication due to their advantages of high repetition frequency, narrow pulse width, and large energy. The effects of the development of electro-optic Q-switching components and the improvement of gain media on the improvement of laser repetition frequency, the application of short cavity method and cavity-dumped technology to narrow the pulse width of lasers, the application of double rod series connection technology and main oscillation power amplification to increase the energy of a single laser pulse are introduced. The main research directions and key technologies of all-solid-state electro-optic Q-switched lasers are summarized, and the research progress of all-solid-state electro-optic Q-switched lasers in three aspects: increasing repetition frequency, narrowing pulse width and increasing single pulse energy are mainly reviewed.