Abstract:To solve the increasingly prominent problem of the electromagnetic spectrum parameters security of the spectrum equipment. This paper analyzes the harm influence resulted from the electromagnetic spectrum parameters leaking, studies the electromagnetic spectrum parameters leaking mechanism including the electromagnetic spectrum parameters leaking model, approach and reason, proposes the electromagnetic spectrum parameters leaking defense approach in the stage of the task planning, the stage of the task implementing and the stage of the task termination according to the feature of the different stages of task, and its availability is confirmed in the experiment. The research result of this paper will provide support for the electromagnetic spectrum parameters leaking defense.