Provided is a Lactobacillus casei producing short-chain fatty acids in a high yield, a culture method therefor and an application thereof. Lactobacillus casei LC89 capable of producing short-chain fatty acids in a high yield is preserved in the China General Microbiological Culture Collection Center on 5 Mar. 2018, with the accession number of CGMCC NO. 15409 and a classification name of Lactobacillus casei. Provided is a Lactobacillus casei producing short-chain fatty acids in a high yield, which is superior to the commercial strain, Lactobacillus rhamnosus GG (LGG). Also provided are a cultivation method therefor and an application thereof in the treatment of host inflammatory bowel diseases to achieve functions of supplementing probiotics to regulate the intestinal tract and alleviating host inflammatory bowel diseases.

A method for preventing or treating oral cancer includes administering a composition comprising Lactobacillus paracasei or a supernatant of the heat-killed Lactobacillus paracasei. A composition that contains an active ingredient with anti-oral cancer effect. The active ingredient is Lactobacillus paracasei GMNL-346 or the supernatant of the heat-killed GMNL-346. The deposition number of the Lactobacillus paracasei GMNL-346 is BCRC 910953 or CCTCC M 2019983.