Composite nanogranules from polymer/inorganic nanoparticle, especially first composite nanogranules which are formed from first polymer and inorganic nanoparticles, second composite nanogranules which are obtained by forming second polymer on the first composite nanogranules, third composite nanogranules which is obtained by forming third polymer on the second composite nanogranules, and Nth composite nanogranules which is obtained by forming Nth polymer on the (N−1)th composite nanogranules with the similar method, are disclosed. A composition comprising anyone of the composite nanogranules described above is disclosed. The preparation method thereof and use of the same are also disclosed.
