Good knowledge about Covid-19 transmission and nature prevents transmission of microorganisms and reduces the incidence of Covid-19 in the community. To assess knowledge of Iraqi people about covid-19&to find the source of information about covid19. Method: Cross-sectional study was done from 1 stJune-1 stJuly 2020, by electronic version of questionnaire through Google-form. Any Iraqi adult can read Arabic and use the internet media (e-mails, telegram, viber, whatsapp, Facebook) or by hand to hand as hard-copy, and accepted to answer the questionnaire through friend, friend of friend, relatives, work colleagues with A Brief message.Analysed by SPSS ver. 23, frequencies and percentages calculated. The study revealed enrolling of 700 Iraqi people from difference part of Iraq and difference were participant in it, the main age of them 230(32.9%) aged 20-29 years old, females 416(59.4%), complete secondary school388(55.4%), near 60% of them working in non-medical field, and governmental employee 364(52.0%), and thereresidency in Baghdad city 457(65%), followed by holly-Karbala 8%, and bible 4%, good knowledgein prevention of Covid-19 transmission, Strength the immunity against covid-19 infection and its complication, and the Overall knowledge appear as good 691(99%) the Internet is the major source of the information about the covid-19; 568(81.1%). Conclusion: most of participants had good knowledge in prevention and strength the immunity and vaccination of covid 19, and the main source of information is the internet then TV & radio.