The focal point of this survey is to give an outline of the chitosan based nanoparticles for different non-parenteral applications and furthermore to put a focus on flow research including supported delivery and mucoadhesive chitosan measurement structures. Chitosan is a biodegradable, biocompatible polymer viewed as safe for human dietary use and endorsed for wound dressing applications. Chitosan has been utilized as a transporter in polymeric nanoparticles for drug conveyance through different courses of organization. Chitosan has synthetic useful gatherings that can be adjusted to accomplish explicit objectives, making it a polymer with an enormous scope of expected applications. Nanoparticles (NP) ready with chitosan and chitosan subsidiaries ordinarily have a positive surface charge and mucoadhesive properties to such an extent that can hold fast to bodily fluid films and delivery the medication payload in a supported delivery way. Chitosan-based NP have different applications in non-parenteral medication conveyance for the therapy of malignant growth, gastrointestinal illnesses, aspiratory sicknesses, drug conveyance to the mind and visual contaminations which will be exemplified in this survey. Chitosan shows low poisonousness both in vitro and some in vivo models. This survey investigates ongoing exploration on chitosan based NP for non-parenteral medication conveyance, chitosan properties, adjustment, poisonousness, pharmacokinetics and preclinical examinations.