anotechnology processes have recently been introduced into the textile field. One of these processes involves encapsulated nanoparticles or nanoproducts, known as micro-nanocapsules. Encapsulation technology of fragrance materials have used for different goals. Fragrance oils can be protected by encapsulation process as degradable materials provided in external phase to increase their rate. Textile industry is one of the mean industries related to people heath in every social and age group. According to the increasing demands to comfortable and new textiles, using antimicrobial finishing is very important. Antimicrobial textile production has been one of the remarkable research fields in textile industry. In this thesis, the antimicrobial properties of micro-nanocapsuled peppermint oil in sodium alginate, a natural biopolymer, have used to develop antimicrobial textiles, for the first time. Numerous methods proposed to produce these micro-nanocapsules in which their details are different. In this research, the preparation possibility of micro-nanocapsules has determined by emulsion and electrospray methods in two parts that in each one the influence of different parameters on micro-nanocapsules size and formation has evaluated. Alginate micro-nanocapsules were characterized on structure, a mean particle size distribution and morphologies by using a scanning electron microscope (SEM). The stability of essential oil during the encapsulation process was assessed using thin layer chromatography (TLC), thermogravity (TG), fourier transform infrared spectroscopy (FT-IR) and Clevenger. Finally, the stability process of micro-nanocapsules produced by microwave has done on cotton fabrics and micro-nanocapsules characterization on textiles examined by FT-IR spectrometry method. SEM micrographs have used to check presence, surface distribution and the preferred join position in textile fibers. Evaluation results of micro-nanocapsules show the mentioned method efficiency in oil encapsulation. The investigation done in micro-nanocapsules adhesion on fabrics showed that the encapsulation process is a suitable method for protecting multifunctional finishes on textiles. The antimicrobial activity of the micro-nanocapsules and finished fabrics was investigated by employing two methods, ASTM E2149-01 (Shake Flask) and AATCC Test Method 100 in which %100 ability of antimicrobial activity of samples containing peppermint oil observed. Examination of antimicrobial function of produced micro-nanocapsules has done by using Gram-negative bacteria E.Coli and the Gram-positive bacteria S.Aureus. Consequently, the result of this research is obtaining a durable, fragrant and antimicrobial fabric.