Nanocomposite material has a wide range of applications in various areas including metal corrosion protection. There are many methods of corrosion protection, but the simple, low cost and easy to apply method is organic protection coating. Chromat is a highly effective corrosion inhibitor pigment in organic coatings, however it is highly toxic, which causes cancer, so countries around the world have gradually eliminated chromates and research into environmental friendly – corrosion inhibitors. Corrosion inhibiting and metal protection properties of conductive polymers were first investigated by Mengoli in 1981 and DeBery in 1985, respectively. Studies have shown that polymer films formed on metal surfaces have high adhesion and good protection, however, this method has limitations on the size of the material to be protected. Therefore, recent studies have focused on the use of conductive polymers as corrosion inhibitors in organic coatings. This coating shows the advantages of conducting polymer overcomes the difficulties of film forming. These studies focus on two of the most popular and important conductive polymers: polypyrrole (PPy) and polyaniline for corrosion protection of iron / steel. Compared to polyaniline, PPy shows high electrical conductivity in both acidic and neutral environments, so it can be widely used in various fields such as energy storage devices, bio-sensors, materials photoelectric, anticorrosion coating. In addition, the synthesis of PPy films on metal substrates is easier due to the low oxidation potential of PPy. Moreover, PPy is able to stabilize better than polyaniline. However, PPy has low dispersibility, so the combination with nano additives to form nanocomposite is very interested in research. Silica nanoparticles (SiO2) have high surface area, good dispersion, ease of preparation so the use nanosilica can improve the expansion; sound insulation; flexural strength; tensile strength; and corrosion protection performance. The PPy’s conductivity as well as the ability of the ion-selective redox reaction greatly depends on the nature of the polymer and the synthesis conditions. In addition, when corrosion occurs, PPy is capable of exchanging anions, so that the counter ions in the polymer also play an important role in the anticorrosion ability. Counter anions, which is small in size and highly flexible, will easily be released from the polymer network. While larger size anions can reduce bond length, leading to the increase of conductivity and solubility. Therefore, synthesis of silica/polypyrol nanocomposite and silica/polypyrol-counter anions is a promising topic, using the advantages of PPy, silica as well as anionic component. There are some studies subjecting the use of of PPy, PPy-anion, PPy/inorganic oxide. However, there is no study about silica/polypyrrole nanocomposite as well as silica/polypyrrole exchanged counter anions and its application in organic coatings for anticorrosion. Therefore, the thesis “Synthesis and characterization of silica/polypyrrole nanocomposite oriented for use in organic corrosion protection coatings” is needed, contributing to the synthesis and application of silica/polypyrrole nanocomposite in the field of corrosion protection