The invention discloses a multimedia file cloud storage platform and a method for eliminating redundancy by using the cloud storage platform, and belongs to the field of information processing. The multimedia file cloud storage platform comprises a storage interface management subsystem, a cluster management subsystem and a storage management subsystem, wherein the storage interface management subsystem is used for generating an operation instruction and used for communicating with the cluster management subsystem or the storage management subsystem. The method for eliminating redundancy by using the cloud storage platform comprises the following steps: firstly, calculating fingerprint information of an uploaded file, generating a verification instruction, transmitting the verification instruction to the cluster management subsystem to be judged, if the fingerprint information is available, checking a corresponding file metadata instruction, and feeding back a result; or else verifying the fingerprint information of the file, and transmitting a result; continuously judging whether the cloud storage platform has identical files or not, if the cloud storage platform has identical files, transmitting a redundancy record adding instruction, and uploading a result; and if the cloud storage platform does not have identical files, storing the files, adding instructions, and uploading a result. By adopting the method, the storage load of a storage server can be reduced, and file transmission between a user and the cloud storage platform can be accelerated.