Self-adaptive clock synchronous system

The invention discloses a self-adaptive clock synchronous system which comprises a main service layer, a secondary service layer and a client layer, wherein the main service layer comprises one or more main time servers; the main time servers are externally connected with an atomic clock; the secondary service layer comprises a plurality of secondary time servers; one part of secondary time servers and the main time servers are subjected to time synchronization; the other part of secondary time servers are mutually subjected to time synchronization; the client layer comprises a plurality of terminals; and the terminals are used for sending time synchronization requests to the secondary time servers to carry out time synchronization. According to the invention, when a reference time source goes wrong, a suitable time source can be automatically searched, so that the system automatically completes the configuration of a synchronization network and the time synchronization network has sufficient stability and robustness and has strong self-adaptive capacity; and meanwhile, a self-adaptive clock synchronous system has higher safety. The self-adaptive clock synchronous system adopts a hierarchical system structure, has clear layers and clear layout as well as strong expandability and is suitable for growth of services.