An antibacterial composition including silver nano particles, a protective agent and water is provided. The molar ratio of the silver nano particles to the protective agent is 1:0.995-1 and the protective agent is selected from a group consisting of MCl, MBr, MI, MS.sub.2O.sub.3 and NH.sub.4OH, in which M represents an element of group IA or IIA. Furthermore, two methods of fabricating an antibacterial textile are also provided.