Universal flying data storage method

The invention provides a structure and a method for storing airplane digitalized flying data. In the method, data frames meeting ARINC717 standards are adopted, and specially-defined words or bits and a filling mode are expanded on the basis of the standards. The method specifically includes the following steps: 1), randomly generating a symmetric encryption secret key used for encrypting data; 2), using a certificate corresponding to a ground system private key to encrypt the symmetric encryption secret key, and writing the secret key which is encrypted in a foremost end of a recording file; 3), writing in digitalized flying parameters acquired from a bus, and generating the data frame according a set format; 4), when number of the data frames reaches a specified value, taking the data frames as a data portion through compression and encryption, adding a data block head and a data block tail at the heat and the tail of the data portion respectively to form a data block, and disposing the data block behind the secret key written in in the step 2); 5), repeating the step 2), the step 3) and the step 4) to sequentially store the data block so as to complete storage of the digitalized flying parameters.