The mucosal surface of intestine is continuously exposed to both potential pathogens and beneficial commensal microorganisms. Recent findings suggest that intestinal epithelial cells， which once considered as a simple physical barrier， are a crucial cell lineage necessary for maintaining intestinal immune homeostasis. Therefore， establishing a stable and reliable intestinal epithelial cell line for future research on the mucosal immune system is necessary. In the present study， we established a porcine intestinal epithelial cell line (ZYM-SIEC02) by introducing the human telomerase reverse transcriptase (hTERT) gene into small intestinal epithelial cells derived from a neonatal， unsuckled piglet. Morphological analysis revealed a homogeneous cobblestone-like morphology of the epithelial cell sheets. Ultrastructural indicated the presence of microvilli， tight junctions， and a glandular configuration typical of the small intestine. Furthermore， ZYM-SIEC02 cells expressed epithelial cell-specific markers including cytokeratin 18， pan-cytokeratin， sucrase-isomaltase， E-cadherin and ZO-1. Immortalized ZYM-SIEC02 cells remained diploid and were not transformed. In addition， we also examined the host cell response to Salmonella and LPS and verified the enhanced expression of mRNAs encoding IL-8 and TNF-α by infection with Salmonella enterica serovars Typhimurium (S. Typhimurium). Results showed that IL-8 protein expression were upregulated following Salmonella invasion. TLR4， TLR6 and IL-6 mRNA expression were upregulated following stimulation with LPS， ZYM-SIEC02 cells were hyporeponsive to LPS with respect to IL-8 mRNA expression and secretion. TNFα mRNA levels were significantly decreased after LPS stimulation and TNF-α secretion were not detected challenged with S. Typhimurium neither nor LPS. Taken together， these findings demonstrate that ZYM-SIEC02 cells retained the morphological and functional characteristics typical of primary swine intestinal epithelial cells and thus provide a relevant in vitro model system for future studies on porcine small intestinal pathogen-host cell interactions.