This invention reveals the potential applications of modified porcine plasma fibronectin that could be applied as a safe material for clinical wound healing and tissue repair. In order to seek safe sources of plasma fibronectin for practical consideration in wound dressing, this invention isolated and modified fibronectin from porcine plasma and demonstrated that modified porcine plasma fibronectin has similar ability as homo plasma fibronectin being as a suitable substrate for stimulation of cell adhesion and directed cell migration. The present invention also reveals a material and a pharmaceutical composition enhance wound healing.