Abstract: According to the requirements of earthquke forecast decision, and using the survey of Petri nets and the knowledge representation of essential entities and inferences of temporal logics, we propose the model of temporal predicates-events nets with confidence. It can express, imply and verify the causality of manifold elements, and can process concurrently and dynamically also. Furthermore, this model can be applied to other forecast and decision problems, such as those in military affairs, meteorology, marketing, etc.