In general, the causes of wound healing with Nano fiber chitosan can be mentioned due to two main reasons:
1. the threedimensional, net work and porous structure of the Nano fiber scaffold which causes the pus and blood moisture absorption and high passage of oxygen over wounds and facilitating wound healing.
2. The chemical structure of chitosan and its favorable biological properties such as its biocompatibility and antibacterial nature cause the assimilation of the biochemical environment of the natural tissue and absorption of fibroblasts as well as facilitating wound healing. The instances of wounds are healed after 10 days [19].