The present invention discloses oxygen-tolerant, acid-tolerant and high-sugar-tolerant acid-producing propionibacteria which is classified and named as Propionibacterium acidipropionici L1124 with thepreservation number of CGMCC. No. 14869. The Propionibacterium acidipropionici L1124 strain has strong tolerance to oxygen, acid and osmotic pressure, and can overcome the problems of long growth period and low yield of anaerobic bacteria in the fermentation process.