Background: Hyperthyroidism is a serious public concern, due the continuous increase in its prevalence and its impact on the mortality rates. Autoimmune hyperthyroidism is seen as a thyroid gland problem. Pro-inflammatory cytokines are crucial for the growth and development of hyperthyroidism, it was shown that the level of several pro-inflammatory cytokines were higher in the hyperthyroidism patients. Objective: This work was aimed to assessment the concentration of certain cytokine in hyperthyroid patients. Materials and Methods: Sixty hyperthyroidism patients and 30 healthy individuals with age range from (30-65) years old were enrolled in this study through their presence at the National Center for Diabetes Treatment and Research in Baghdad through the period from December 2021 to April 2022.Blood samples were collected to evaluate the level of IL-6, IL-18 and TNF- α using ELISA technique. Results: Results showed highly significant (P≤0.01) increasew in IL-6, IL-18, and TNF- α levels in comparison with the control groups. Thus, it can be believed that the pro-inflammatory cytokines can play a role in the pathogenicity of hyperthyroidism. Conclusion: It can be concluded that the pro- inflammatory cytokines play a major role in the pathogenicity of hyperthyroidism.