In recent years corrosion-resistant self-healing coatings have witnessed strong growth and their successful laboratory design and synthesis categories them in the family of smart/multi-functional materials. Among various approaches for achieving self-healing, microcapsule embedment through the material matrix is the main one for self-healing ability in coatings. In this study, the effect of micro / nano capsules containing linseed oil for the restoration of micro-cracks in the epoxy coating was investigated. Capsules by in-situ polymerization of Urea-formaldehyde resin to form a shell around linseed oil droplets were synthesized. Various parameters such as the type of stirrer, the type of material stabilizer, stirring speed and stirring blade on the morphology and size of the capsules were investigated. The results showed that the optimum conditions for the synthesis of capsules by combining two of the poly vinyl alcohol and sodium dodecyl sulfate as surfactant, the use of a mechanical stirrer with a three-bladed propeller with a stirring rate of 300 rpm for the microcapsules and use of mechanical homogenizer with rate over 20000 rpm to produce nano capsules. The capsule features such as shape, size, morphology and thickness of the shell were studied by polarized light microscopy, scanning electron microscopy (SEM) and field emission scanning electron microscope (FESEM). FTIR test was used to prove the success of the encapsulation process. Microcapsules are perfectly spherical shape, with a diameter of 500-600µm, with 84.6 weight percent of linseed oil and a shell thickness was 300-400nm. Nanocapsules synthesized by the geometry of the sphere, the size of the diameter of 75-130nm and 93.43 weight percent of linseed oil were carrying. After the gain of capsule with favorable conditions, these particles are added to epoxy resin in the form of coating on carbon steel substrates were applied. Self-healing properties and performance of anti-corrosion coatings containing micro / nano capsules by using electrochemical impedance spectroscopy (EIS) and salt spray test (Salt spray) were evaluated. The results showed that coatings containing Nanocapsules compared with coatings containing Microcapsules much better performance and fifteen percent by weight of the capsule is a much better performance and higher efficiency than other percentages. In this study, in addition to achieving self-healing and anti-corrosion properties another aim was studied. In fact, the ability of the capsule to store the core material provided its application in the context of other coatings such as antifouling coating which requires to a gradual release of biocides for improve performance. To produce coatings with antifouling property a vegetive biocide (Bitter melon leaf) and two environmentally friendly biocide contains powdered titanium oxide (TiO 2 ) and zinc oxide powder (ZnO) was used. To achieve a coating with two self-healing capability and antifouling property simultaneously, addition of bitter melon biocide, linseed oil also used in the form of a combination with Bitter melon leaf extract as core material. FTIR spectra confirmed that the vegetive biocide used with linseed oil, has been successfully encapsulated by urea-formaldehyde shell. Antifouling property of prepared coatings using algae growth test was conducted. All Macroscopic surface testing, measure test to determine the levels of chlorophyll in the biomass and determine dry weight biomass attached to samples, demonstrated that the best antifouling property obtained by coatings containing 15 Wt.% of nano capsules carrier linseed oil and leaf extract of bitter melon with distribution of titanium oxide particles within the matrix of coating. Keywords: self-healing coatings, in situ polymerization, urea-formaldehyde resins, epoxy, biocides, antifouling coating.