This study aims to investigate the nature of crowd medicine management, its purpose and its importance to the Ministry of Health, the relationship of crowd medicine management to the Hajj and Umrah seasons, the importance of crowd medicine management in biological diseases, crises, and disasters, and the management of large numbers of people, its importance in organization, development, planning and preparing cadres for large occasions such as Hajj, Umrah and other occasions. this questionnaire was distributed to social networking groups (randomly) WhatsApp, where 500 answers were obtained from those (residents of the city of Mecca), out of a total of 600 questionnaires.