This disclosure discloses a system and a method for sharing mobile internet service. The system comprises: a mobile client node configured to send a message for requesting a shared service; and a mobile agent peer-to-peer network including multiple mobile agent peer-to-peer nodes which are configured to receive the message from the mobile client node and provide for the mobile client node the shared service requested by the message. This disclosure uses the mobile agent peer-to-peer node to receive from the mobile client node the message for requesting the shared service and provide the shared service according to message, to solve the problem that transmission and sharing of large files among mobile terminals can not be implemented in the related art, and thus to implement the sharing of resources among mobile terminals.