Provided is an independent disk redundant array disaster tolerance storage method based on a random matrix.The method comprises the steps that code parameters are built according to the size of a file to be stored; the file to be stored is equally divided into k data blocks, and zero-padding is conducted on insufficient places; a storage region in a storage system is obtained; the storage region is divided into n storage blocks; the first k storage blocks of the storage region are selected to serve as original data storage blocks, and the rest n-k storage blocks serve as redundant data storage blocks; the k data blocks are filled into the first k original data storage blocks column by column; a random code matrix G[n*k] of which the scale is n*k is built on GF(2) according to the code parameters; n-k redundant data blocks of the storage blocks are generated according to the random code matrix G[n*k] and k data blocks; the n-k redundant data blocks are filled into the n-k redundant data storage blocks column by column.According to the independent disk redundant array disaster tolerance storage method based on the random matrix, the disaster tolerance capacity and expansibility of the storage system are improved.