After the outbreak of novel coronavirus disease 2019 (COVID-19) in Wuhan, China, its spread to other countries is rapidly increasing . In this integrative review, we report the prevalence of gastrointestinal symptoms in patients with COVID-19 . For this purpose, available articles on gastrointestinal manifestations in patients with COVID-19, which were reported from China, were reviewed . All reviewed articles were searched from December 11 , 2019, to June 20 , 2020, based on specific key words . Related findings in these articles show that the main target of COVID-19 is lung tissue, as after the virus enters the body, it mainly causes respiratory symptoms in affected patients . But in addition to respiratory symptoms, it is possible that, over time, these patients present with other symptoms, the most obvious of which are gastrointestinal symptoms . It is well documented that diarrhea and vomiting are the most common gastrointestinal symptoms in COVID-19 patients . As part of this report, we also look at the incidence and frequency of gastrointestinal symptoms in COVID-19 patients in Iran . The results can be used by providers as a guideline for better management of gastrointestinal symptoms in these patients.