Using nonlinear optical crystals for laser frequency conversion is a key method for extending laser wavelengths. These crystals, particularly borates, are crucial in all solid-state laser systems, especially for ultraviolet laser output, due to their diverse structures and superior optical properties. The K₃B₆O₁₀Br crystal, notable for its short ultraviolet cutoff edge (182 nm), significant nonlinear optical coefficient (d₂₂ of 0.83 pm/V), and moderate birefringence index (0.046@1064 nm), shows promise in second and third harmonic laser output. This article provides an overview of the growth and fundamental characteristics of the K₃B₆O₁₀Br crystal. Recent advancements in visible/ultraviolet lasers and optical parametric chirped pulse amplification, achieved through crystal frequency doubling and sum frequency techniques, are summarized. Additionally, the potential future developments and applications of the K₃B₆O₁₀Br crystal are explored in this study.