A system for devices tracing includes multiple devices that are connected in a network, a configuration management module, and a tracing management module. The configuration management module is adapted to store and maintain tracing configuration information. The tracing management module is adapted to obtain the tracing configuration information, determine different devices involved in the tracing task, send tracing control commands to each of the different devices, receive the tracing messages from the each of the different devices, and perform cross-NE tracing. A method for devices tracing includes: receiving tracing task information, and determining different devices involved in a tracing task according to the tracing task information; sending a command for creating a tracing task to each of the different devices; receiving tracing messages reported by the each of the different devices, and obtaining tracing results. Embodiments of the present invention may support tracing multiple devices concurrently and support cross-NE tracing, thus achieving unified tracing.