The invention provides an evasion cross-layer optimization method of a display terminal of a wireless sensor network based on energy priority iteration, which is characterized by comprising a time slot competition mechanism based on the energy priority iteration, a data sending mechanism based on a display terminal node set, and a cross-layer information interaction mode based no node transmittingpower. The evasion cross-layer optimization method has the advantages of being scientific and reasonable, high in applicability, high in efficiency, high in channel utilization rate, and being able to be applied to complex environments and prolong the life cycle of the network.