A method for processing key logic states, comprising: obtaining by an initialization unit , a plurality of key logic states, within a train system, generated by a Centralized Traffic Control system during operation, determining operating devices associated with each of the plurality of key logical states, storing each key logical state together with an identification of an associated operating device in a corresponding manner in a database, and transmitting each key logic state to an autonomous machine; characterized by determining by a monitoring unit whether a key logic state in the Centralized Traffic Control system is changed, obtaining, when a first key logic state is changed, a latest state data of the first key logic state and updating the first key logic state based on the latest state data, storing the updated first key logic state into the database, and transmitting the updated first key logic state to the autonomous machine; and searching by a synchronization unit , after a second key logic state in the autonomous machine becomes abnormal, in the database according to an operating device associated with the second key logic state to determine a second normal key logic state stored in the database, and transmitting the second normal key logic state to the autonomous machine to achieve synchronization of key logic states; wherein the key logic states comprise: states of a traction power contact network of a section, which comprise: being connected to network, being not connected to network, being powered, and being not powered; and wherein the key logic states further comprise: open-close states of a section, which comprise: closed and open. obtaining by an initialization unit , a plurality of key logic states, within a train system, generated by a Centralized Traffic Control system during operation, determining operating devices associated with each of the plurality of key logical states, storing each key logical state together with an identification of an associated operating device in a corresponding manner in a database, and transmitting each key logic state to an autonomous machine; characterized by determining by a monitoring unit whether a key logic state in the Centralized Traffic Control system is changed, obtaining, when a first key logic state is changed, a latest state data of the first key logic state and updating the first key logic state based on the latest state data, storing the updated first key logic state into the database, and transmitting the updated first key logic state to the autonomous machine; and searching by a synchronization unit , after a second key logic state in the autonomous machine becomes abnormal, in the database according to an operating device associated with the second key logic state to determine a second normal key logic state stored in the database, and transmitting the second normal key logic state to the autonomous machine to achieve synchronization of key logic states; wherein the key logic states comprise: states of a traction power contact network of a section, which comprise: being connected to network, being not connected to network, being powered, and being not powered; and wherein the key logic states further comprise: open-close states of a section, which comprise: closed and open. <EOS>