Fermentation of soybean meal eliminates the anti-nutritional factors of soybean meal making fermented soybean meal a potential lower-cost substitute for animal protein in piglet diets.Fermentation process using bacteria, fungal and yeast strains in soybean meal (SBM) is the novel technique which is used to remove the anti-nutritional factors of SBM. In general, two types of fermentation process namely Solid State Fermentation (SSF) and Liquid or Sub merged State Fermentation (SmF). Numerous studies were carried out to document the beneficial effects of feeding fermented soybean meal. Weaning is a stressful condition to the piglets which accompanied by diarrhoea, some time may lead to death. Antibiotic growth promoters can be added to the piglet diets but it is banned in most of the countries. Fermented soybean meal supplementation can enhance pig growth performance of which the enhancement in feed efficiency is due to the improvement in nutritional value and availability rather than feed intake.The gut microbiota plays a crucialrole in livestock health and disease. Hence, it is necessary to find a mechanism to remove anti nutritional factors along with improved intestinal microbiota thereby producing improved production performance and reduced diarrhoea in piglets. The main objective of this review is to discuss the benefits of feeding fermented soybean meal in piglets.