A roof-storage-type sun visor includes a housing located inside a roof of a vehicle. The housing has a storage recess therein and a sun visor unit configured to be disposed along the storage recess. The sun visor unit includes a sun visor located so as to correspond to a windshield glass and includes multi-stage rails located at opposite sides of the sun visor. The sun visor is configured to be withdrawn outside the storage recess along the multi-stage rails.