Reportedly, SARS-CoV-2 infection impairs glucose homeostasis and metabolism. Moreover, hyperglycaemia has emerged as an important risk factor for COVID-19 mortality. A cross-sectional study involving hospitalized patients in Sidi-Bel-Abbes with COVID-19 critical infection regardless of diabetes status was conducted. Data was collected from COVID-19 Registry, including age, sex, and blood sugar level at admission. Out of 800 patients admitted for SARS-CoV-2 with, 332 patients (206 males, 126 females) exhibited hyperglycaemia, which equates to a prevalence of 41,5%. Patients had a median age of 64 years and a median blood sugar of 1,59. Admission hyperglycaemia was not statically associated with age and sex. Blood glucose status is paramount for ensuring safe and effective treatment of inpatients COVID-19. Additional studies are forthcoming to address the study's limitations and to better understand the impact of hyperglycaemia on COVID-19 patients.