The basic nickel carbonate powders with high purity were prepared based on the analysis of adsorption mechanism of impurities ion and the precipitation process conditions. The morphology and crystalline phase of the resultant products were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) respectively. The washing effect was analyzed by conductance instrument. An high purity basic nickel carbonate meet the purity requirements of electronic industry application is obtained through enhancing ageing and increase temperature of the subsequent washing.