Aims: To describe characteristic of hyperglycemia in severely burned patients. Methods: a prospective study was caffied out on 88 non- diabetic severely burned patients with burn shock admitted to ICU, National Institute of Burns. from 10/2010-8/2011. The study was divided 2 phases: burn shock and infection. hyperglycemia level relating to shock'level and some burns complication were analyzed. Results: Hyperglycemia had no relation to age, sex and casual agents (P 0.05). Hyperglycemia was related to burn shock severity as well as burn surface area and fullthickness. All patients with inhalation injury presented hyperglycemia, 3,38 times higher than that in non-inhalation injury groups. Patients with hyperglycemia had significantly higher incidence of septic shock & bacteremia (P 0.05). Conclusion: hyperglycemia which is common seen in severely burned patients, resulting more severe morbidity, risk of complication and and high death rate.