A new method of preparing nanoparticle - quick homogeneous precipitation method was devel oped. Some nanoparticles(for example, NiS and FePO_4 particles) could he easily obtained by this method with high yield. The nanoparticles as prepared show good dispersion and narrow size distribution. The influence of the surfactant has been discussed. A new method of preparing nanoparticle - quick homogeneous precipitation method was devel oped. Some nanoparticles (for example, NiS and FePO 4 particles) could he easily obtained by this method with high yield. The nanoparticles as prepared show good dispersion and narrow size distribution. influence of the surfactant has been discussed.