Cloud NAS multi-account storage system

The invention provides a cloud NAS multi-account storage system, which comprises a cloud NAS, a processor and a memory in which a computer program is stored, and when the processor executes the computer program, the following steps are realized: receiving a cloud NAS application request sent by a target user; dividing a target cloud NAS space for a target user based on the cloud NAS application request, opening the authorization authority of the target cloud NAS space to the target user, and sending target cloud NAS space information corresponding to the target cloud NAS space to the target user; marking an account of a target cloud NAS space corresponding to the target user as a main account; sub-account opening information sent by the main account is received, and when the sub-account opening information does not meet a preset opening condition, expansion prompt information is sent to the main account; therefore, the use of multiple persons under one account number is met, and multiple persons under one acc