A high performance hollow gold nanoparticles (HGNs) decorated one-dimensional (1-D) Bi₂S₃ nanoribbon (NR) photodetector was fabricated for green light detection (560 nm). The single crystal 1-D Bi₂S₃ NRs with growth orientation along [001] were synthesized by a simple solvothermal approach. Optoelectronic analysis reveals that the performance of the plasmonic photodetector was greatly enhanced after decoration with HGNs. For example, the responsivity increases from 1.4 × 10² to 1.09 × 10³ AW⁻¹, the conductivity gain from 2.68 × 10² to 2.31 × 10³, and the detectivity from 2.45 × 10¹² to 2.78 × 10¹³, respectively. Such performance enhancement was attributed to the localized surface plasmon resonance (LSPR) effect caused by the HGNs according to both experiment and theoretical simulation. This study is believed to open up new opportunities for managing light and enhancing the device performance of other 1-D semiconductor nanostructures based optoelectronic devices and systems.