Citizens of French Guiana should arrange for a tourist visa through a Qatari embassy or hotel in Qatar and can apply on-line through: http://www.moi.gov.qa/site/english/channel/Visitors/index.html
Unfortunately, at this time VisaHQ does not provide service for tourist visas to Qatar.
Additional steps you may take:Check the current validity of your passport and the availability of blank visa pages
Contact the nearest embassy or consulate of Qatar
Take advantage of our extensive embassy and consular database to find the nearest one. Upon contacting the embassy confirm the required documents, the time it takes to process the visa and whether the consulate accepts applications by mail.