Human's milk and cow's milk fed-infants, long before the mother is exposed heavy metals are potentially dangerous for both mother and baby. Concentrations of toxic heavy metals (Pb, Cd, As) and major nutritional trace element (Zn) which collected center Bitlis, Tatvan and various villages in the 75 volunteer nursing mothers received 6 months after the birth human's milks and 75 cow milks were analyzed. This study was measured by Inductively Coupled Plasma-Mass Spectrometer. Work was measured in accredited laboratory. In the samples As and Cd were under detectable leves although Zn and Pb were measured. Survey conducted, Zn and Pb levels in the mother milk which collected Tatvan borough were determined the highest. The all metal levels in the mother milk and cow milk which collected Bitlis center higher than villages. Zn levels in the cow milks which collected Bitlis center the highest. As a results of analysis, the avarege values of the lead in the human milks respectively (Bitlis center, Tatvan borough and villages) were found 0.0003 +/- 0.00004 mg/kg, 0.00045 +/- 0.000052 mg/kg, 0.0002 +/- 0.00003 mg/kg; the avarege values of the zinc 3.2 +/- 0.64 mg/kg, 3.34 +/- 0.57 mg/kg, 2.5 +/- 0.37 mg/kg. The avarege values of the lead in the cow milks respectively (Bitlis center, Tatvan borough and villages) were found 0.002 +/- 0.0004 mg/kg, 0.003 +/- 0.0004 mg/kg, 0.001 +/- 0.0003 mg/kg; the avarege values of the zinc 3.7 +/- 0.51 mg/kg, 3.6 +/- 0.49 mg/kg, 3.0 +/- 0.41 mg/kg. As a results of analysis between groups weren't found significant relationship (P>0.05).