An antibacterial composition is provided to prevent silver particles from being fallen out from a silver-particles-treated article due to cleaning, washing or abrasion, secure improved durability and anti-bacterial effect and show excellent solubility and solubility, thereby being applied to various products. An antibacterial composition comprises an organic silver complex obtained by reacting at least one silver compound represented by the formula(1) of Ag_nX with at least one ammonium carbamate-based or ammonium carbonate-based compound represented by the formulae(2) to (4), wherein X is a substituent selected from the group consisting of O, S, halogen, cyano, cyanate, carbonate, nitrate, nitrite, sulfate, phosphate, thiocyanate, chlorate, perchlorate, tetrafluoroborate, acetylacetonate, carboxylate or a derivative thereof, n is an integer from 1 to 4, and each R1 to R6 is H. The anti-bacterial treating method is characterized in that the antibacterial composition is coated by a method selected from the group consisting of spin-coating, spray-coating, dip-coating, flow-coating, doctor-blade method, dispensing, ink-jet printing, offset printing, screen printing, pad printing, gravure printing, flexo-printing, and litho-printing.본 발명은 경제적이고, 세탁이나 세척, 마찰 등에 의해서 은 입자가 처리된 제품에서 은 입자가 따로 떨어져 나가지 않고, 견고하게 결합되어 내구성 및 항균효과가 향상될 뿐만 아니라, 용해성 및 안정성이 우수하여 다양한 제품에 적용할 수 있는 은 착체 화합물을 함유한 항균성 조성물, 상기 은 착체 화합물을 함유한 항균성 조성물을 이용한 항균처리방법 및 항균처리된 항균성형품에 관한 것이다.
