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In order to detect debond detection of the adhesive structure of the train window that is not easy to remove, the ultrasonic pulse echo quantitative detection method was proposed by using the advantages of fast flaw detection and high sensitivity.By means of simulation and experiment and establishing the simulation model of window bonding structure,the propagation process of ultrasonic in adhesive material and the influence of different probe parameters on ultrasonic signal were analyzed in detail,and a double crystal probe specially for window bonding was designed; Finally,an ultrasonic testing experimental system was built to verify the correctness and reliability of the simulation model and probe testing,which provides a reference model and theoretical basis for the quantitative analysis of debonding detection of window bonding structure.