A SA concentration of 55.3 ± 0.8 g/L, productivity of 2.77 ± 0.04 g/L/h, and yield of0.8 ± 0.02 g/g were obtained, and the continuous fermentation exhibited long-term stability for as long as18 days (440 h) with no obvious fluctuations in both SA and biomass levels. The Jerusalimsky equation forthe specific rate of SA production presented the inhibition phenomenon of the product, demonstratingthat 60 g/L SA might be a critical concentration in this continuous FBB system. The results obtained could be beneficial for future fermentor designs and improvements in SA production.