Structural tailoring of oxide nanomaterials from one function to another represents a straightforward approach for promoting the relevant technological applications.Despite many great efforts, it is not an easy work to independently control the chemical compositions, structures, morphologies, and even the defects for creating multi-functionalities.This work will address the progress our group has recently achieved in this direction, according to the following catagories: (i) formation of oxide nanoparticles with multi-color emission functions [1-4];(ii) creation of ferromagnetism from the non-magnetic materials [5];(iii) stabilization of meta-stable phases with a giant-dielectric constant [6-8], and (iv) controlled growth of assembled nano-sized oxides for superior catalytic performance [9,10].All these achievements will be indicated to be based on our understanding of the structural aspects of the materials properties, as demonstrated by highlights of a variety of relevant synthetic strategies towards new nanosized-oxides [11,12] never accessible by conventional preparation methods.