3～5 μm mid-infrared laser has attracted significant attention due to its numerous applications in gas monitoring, medical treatment and optoelectronic countermeasures. Among these, the use of 1064 nm laser-pumped MgO-doped periodically poled lithium niobate (MgO∶PPLN) as a critical method for obtaining 3～5 μm mid-infrared laser, has becoming a research hotspot both domestically and internationally. In this study, to obtain high-power mid-infrared pulsed laser output, a domestically-produced widespectrum 1064 nm pulsed fiber laser is utilized to pump a multi-period MgO∶PPLN crystal in a pumping laser single-pass and signal laser single-resonance OPO (SPSR-OPO) working mode, achieving high-power mid-infrared laser outputs at wavelengths of 3181 nm, 3419 nm, 3620 nm, and 3807 nm. Under maximum pumping power of 89.7 W, the output powers are 13.29 W, 12.19 W, 9.5 W and 7.61 W, respectively, with corresponding optical-to-optical conversion efficiencies of 14.82%, 13.59%, 10.59%, and 8.48%. The study significantly lowers the technical threshold for obtaining mid-infrared lasers by employing domestically-produced broadband pulsed fiber lasers to pump MgO∶PPLN crystals, providing important experimental basis for the research and development of high-power domestically-produced mid-infrared lasers.