Keeping the dispersion state of inorganic nanoparticles in their primary dimension in the polymer base is the key problem in the preparation of polymer-based nanocomposites.In this series of two reviews
the combination form between inorganic nanoparticles and polymer base and preparation method of polymerbased nanocomposites are sorted.The fundamental principle and key techniques of direct dispersion method and simultaneous formation method are discussed in this review.