N,N′-diarylthiourea(DATU)/CdS with groups of 4-(H,Me,MeO,Cl and COOH) and 3-NO2 on benzene, the organic-inorganic nanocomposites, were successfully synthesized by reacting CS2 with aryl amines and CdCl2 at 50℃ in water and triethanolamine(TEA)（Vwater：VTEA=1:1）. The products were characterized by XRD, FT-IR, SEM, TG, UV–vis and PL. The results reveal the formation of the organic-inorganic nanocomposites in good disperse nanospheres. The electron-withdrawing groups on benzene effectively prevent the aggregation of DATU/CdS particles, thus resulting in good disperse spheres. Furthermore, bigger blue shift of CdS UV-Vis is also caused by electron-withdrawing groups. The strong interaction between DATU and CdS results in higher thermostability of DATU in nanocomposites and increasing intensity at 529nm PL emission peak.