Multimode terminal and service implementation method for multimode terminal

Provided are a multimode terminal and a service implementation method for a multimode terminal. The multimode terminal includes: a master controller, a slave controller, a subscriber identity module card, a first radio frequency chip, a first antenna, a second radio frequency chip and a second antenna. The master controller includes: a main processor, configured to select a network system for executing a current service and call a processing chip of the selected network system to execute the current service, and a first processing chip of a first network system; the slave controller includes: a second processing chip of a second network system; and the subscriber identity module card is coupled with the master controller and the slave controller respectively. By the technical solution, a network resource can be fully utilized.