Mobile terminal security information storage method and system on the basis of emmc chip

Disclosed are a mobile terminal security information storage method and system on the basis of an EMMC chip. According to the present invention, a key is set in a PC terminal, and if intending to modify RPMB information, a user needs to download the key in the PC terminal through a mobile terminal, so that the security of a related security information document in the mobile terminal is greatly improved. The present invention is simple and easy to operate and has high practicality.