Inorganic (CdS, Ag ) - polyacrylamide (PAM ) nanocomposites were prepared successfully using a convenient ultraviolet irradiation technique. It was found that the inorganic nanoparticles could be well homogeneously dispersed in the polymer matrices as the result from the fact that polymerization of organic monomer and formation of inorganic nanoparticles were simultaneous. It is very interesting that the presence of inorganic ions may be favorable for the Polylnerization of organic monomer, meanwhile the organic polymer matrices can efficiently prevent producing inorganic nanoparticles from aggregation. This technique is also applied to the fabrication of other inorganic-polymer hybrid nanocomposites.