At present,most metal wire fretting wear prediction models are suitable for vertical contact,while the models under acute angle intersection have some shortcomings,such as cumbersome calculation process and incomplete characterization,which are difficult to predict the complex and disordered metal wire wear in metal rubber conveniently and effectively.Therefore,based on the finite element analysis,it was determined that the spiral curvature has little effect on the wear results.Therefore,the spiral metal wire contact pairs in the metal rubber were idealized into straight metal wire contact pairs to explore the evolution law of the metal wire wear characteristics under disordered contact.The results show that the evolution of wear characteristics under disordered contact condition is closely related to the contact angle of wire.According to the geometric analysis,the special position relationship of the wear mark located at the 1/2 contact angle of the metal wire under arbitrarily acute contact was obtained,and the fretting wear evolution prediction model under arbitrarily contact shape was established.The prediction model was verified by the fretting wear test results of metal wire in the existing literature.The results show that the established wear evolution model under arbitrarily crossing angle can accurately reflect the wear results of metal wires,and the error is less than 15%.The research results can provide a theoretical basis for predicting the fretting wear and service life of metal wire in metal rubber.