The invention discloses a vehicle-mounted DVR (Digital Video Record) raw disk file storage system, which is applied to DVR video big data storage. The system comprises a disk, an equipment side and a player, wherein the equipment side and the player are connected with the disk; the equipment side is also used for writing data; and the player is used for reading the data. The disk is divided into two partitions, wherein one partition is a data index partition of the first partition, the other partition is a data storage partition of the second partition, and the ratio of the data index partition to the data storage parathion is about 1:500. Since the data index partition of the second partition does not need to carry out the recording work of any file system, the a writing speed is high, the data index partition of the second partition does not need to be formatted and does not need to carry out system detection work, all file system formatting, system detection and file system repair happen in an ultra-small partition, i.e., the data index partition of the first partition, workload is greatly reduced even if a behavior style is the same, all pieces of work can be finished within 30 seconds, a flying feeling is brought for users during daily startup and routine examination and repair, and the system has the advantages of being high in running speed, smooth in use and convenient in operation.