Abstract: Visible lasers are used extensively in laser color display, laser medical treatment, quantum information, optical communication, and other applications. Trivalent Pr-ion (Pr³⁺) has attracted much attention because of its rich transitions in the visible band. Especially in recent years, the emergence of commercial pump sources such as laser diode (LD) and optically pumped semiconductor laser (OPSL) has made great progress in the research of Pr³⁺ doped solid-state lasers. According to the three output types of Pr³⁺ doped solid-state lasers: continuous-wave output, pulse output and single longitudinal mode output, this paper introduces the typical work of each output type in a specific band. The research history and current status of Pr³⁺ doped solid-state lasers are summarized with time as the main line, and the future prospects of Pr³⁺ doped solid-state lasers are projected.