Aim: Quarantine is a condition that many societies forced for controlling the COVID pandemic. Quarantine threatens many mental and physical health aspects of human beings. Physical activity play a main role in improving health and quality of life. The current study was assessing the eating disorder and coping strategies in active and inactive people duringCOVID-19lockdown. Method: The present study was done by three online questionnaires was included: physical activity (16 questions), coping styles (48 questions), and eating attitude(26 questions) questionnaires, and these questionnaires completed by anybody who was > 18 years old in Iran in summer of 2020. Questionnaires included demographic information and main questions that were completed by 705 persons. Results: results showed that there was a positive significant relationship between physical activity and eating disorder attitude (p= 0.04), especially in active females(p= 0.0001). In order to, results identified there was a negative significant relationship between eating disorder attitude and coping strategies in active(p= 0.02) and inactive (p= 0.03)males. Conclusion: according to the findings of this study, the eating disorder attitude has increased in active females and they preferred to follow the problem-focused style for coping with crisis conditions. Furthermore, active males had showed more likely for eating disorder.