This study was conducted to investigate the effect of Selenium (Se) or Zinc (Zn) supplementation on blood biochemical of twelve of Kurdi male lambs, aged between 3-4 months, average live body weight of (20-23) kg. The Lambs were divided randomly into three groups (4 lambs for each group). first group: control group (C) basal diet without Selenium or Zinc, second group-(T1): Selenium (sodium selenite) was added as 0.5 mg / kg of fed, and Third group-(T2): Zinc (zinc sulphate) was added as 100 mg/kg of fed. Selenium and Zinc were as given capsules daily for 90 days. Blood samples were taken from the lambs on the 90 days. The results showed no significant differences (P≥0.05) of the Complete Blood Count (WBC, Mono, Neut, RBC, HGB, HCT, MCV, MCH, MCHC, RDW-CV and RDW-SD) except Lymphocytes, had significantly different (P≤0.05) between the that added Se and Zn coefficients and the control group, there were no significant differences (P≥ 0.05) in alkaline phosphatase (ALP) and Gamma-glutamyl transferase (GGT) between the supplementation and the control groups, the differences were significant (P≤ 0.05) in the level of Testosterone Hormone and Globulin between the supplementation and the control groups. There was no relationship between Complete Blood Count and Testosterone, Globulin, ALP and GGT. The results showed that the supplements selenium or zinc improved significantly of Testosterone hormone and Globulin in Blood Serum of Kurdi Male lambs.