The invention discloses bacillus coagulans and an application thereof. The bacillus coagulans is preserved in China General Microbiological Culture Collection Center on May 13, 2019, and has the preservation number of CGMCC NO.17801. The invention also discloses a brewing method of table vinegar. The strain is resistant to 8% (v/v) acetic acid, has a wide range of growth temperature (30-55 DEG C),produces acetic acid and highly produces lactic acid, not only can adapt to an acetic acid fermentation harsh environment which is difficult for ordinary microorganisms to grow, but also has low requirements for oxygen, and can grow under both aerobic and anaerobic conditions. Through the use of the strain, the strain can improve the problem of reduction of the content of nonvolatile acid causedby seasonal changes, bacterial degradation and other problems, can significantly improve the content of nonvolatile acid in table vinegar, improves the flavor of the product, improves the quality of the product, and improves the yield of the product to a certain extent.