High repetition rate mid-infrared lasers with the wavelength of 3μm~5μm play important roles in the field of photoelectric countermeasures, which are mainly classified into three types: direct pumped high repetition-rate mid-infrared solid-state lasers, high repetition-rate mid-infrared fiber lasers, and high repetition-rate mid-infrared optical parametric oscillators (OPOs). The main technical solutions of generating high repetition-rate mid-infrared lasers have been introduced first, and the related research progress of three types of lasers mentioned above have been discussed in this report. Finally, we also analyze the relative problems and point out some development directions of various technologies in the near future.