Coronavirus disease 2019 (COVID-19) is a respiratory tract infection caused by a newly emergent coronavirus. Iran is one of the countries affected by the disease. Health center services have a critical role in response to the COVID-19 outbreak. This study with the aim of providing the functions and services of primary health care was performed by a health center in Iran during the COVID-19 outbreak. Based on the results, of the functions and services of the primary health care included purposive inter-organizational interaction and cooperation, risk analysis, planning, education and consultation, exercise, risk communication, environmental health, occupational health, and development of health infrastructures. Iran established and developed specific approaches for case identification, screening, and resource allocation to protect public health by primary health care services. Health center services are effective for a proper response to COVID-19 and a reduction in mortality by screening, rapid identification, and public education.