A wound healing bilayer dermal membrane for humans and. animals and a process for preparation thereof. This invention relates to a wound healing bilayer dermal membrane for humans and animals and a process for preparation thereof comprising of bilayer membrane including inner chitosan layer attached to outer polyvinyl alcohol layer loaded with extracts of Azadirachita indica, Aloe Vera and Ficus Benghalensis having therapeutic property. It is associated with the following advantageous features:- Safe for use and biodegradable Efficient in healing wounds by means of therapeutic property Continuous release of drug to wound to facilitate healing Easy to manufacture Cost effective and effective as well Involves no side effects owing to herbal composition.