Abstract: A functionalized MWCNT complex structure containing SiO2@EDAS nano-particles and Ag@Citrate nano-molecules and of high moisturization and sterilization includes a functionalized MWCNT; carbon atoms of a benzene of the functionalized MWCNT being combined with other functional groups containing COOH, OH and SO; a plurality of SiO2@EDAS nano-particles which are formed by modifying N-[3-(2-Aminoethylamino) propyl] trimethoxysilane (EDAS) on SiO2 nano-particles; the adhering layer further containing a plurality of Ag@Citrate nano-molecules. Therefore, since the functionalized MWCNTs 10 contains both the SiO2@EDAS nano-particles 21 and the Ag@Citrate nano-molecules 22 and thus it has the functions of the moisturization and sterilization.