Introduction: One of the biggest challenges is to reduce inflammation without compromising the patient's proper immune response. In this hypothesis, science should focus on medicine and nutrition. The importance of proper nutritional status and eating habits has been widely recognized in the Covid-19 pandemic. Therefore, the present study answers the question of what is the role of nutrition on Covid-19 in pediatric. Methodology: The present study is a systematic review that was conducted during the third quarter of 2022 at Tabriz university of medical sciences. Therefore, at first the keywords were determined and then the search was performed among all Persian and English language databases. Results: The covid-19 epidemic has had a wide impact on the health, economy and livelihood of people in the past and has caused sudden changes in the way of life of people through social distance and quarantine at home with irreparable mental consequences. Optimizing public health during this epidemic requires not only the knowledge of medical and biological sciences, but also all sciences related to lifestyle, social and behavioral studies, including food habits and lifestyle. Conclusion: Changing the eating style and choosing a healthy diet rich in nutrients can lead to strengthening the immune system and overcoming diseases, including corona disease.