Approval method and system based on mobile terminal

The invention discloses an approval method and system based on a mobile terminal. The approval method includes the steps that an approval system server sends encrypted approval list contents to the mobile terminal of an approval user in a mobile information mode with a conversation secret key; the mobile terminal decrypts the obtained approval list contents; responding to received approval result information input by the approval user, an approval result original text is generated according to a preset format, digital signature operation is carried out on the approval result original text, approval report information is encrypted with the conversation secret key and comprises a signature value and the approval result original text, and the encrypted approval report information is sent to the approval system server; the approval system server decrypts the approval report information and enables the signature value to be verified; responding to success verification, according to the approval result original text, corresponding approval operation is executed. By means of the technical scheme, an approval scheme is conveniently and rapidly moved, and meanwhile the safety, the non-repudiation and the tamper-proofing performance of the movement of the approval scheme are further provided.