Abstract: Given the problems of multiple failure points and various failure types of wellbore integrity and the difficulty in locating and identifying failures in deep oil and gas wells, a method for wellbore integrity detection was proposed on the basis of available detection methods and integrated optimization of related equipment and processes. With acoustic and electromagnetic features as the core, this method could locate and identify tubing leakage, thread leakage, casing leakage, cement sheath channeling outside of the casing, leakage under liquid level, and multiple leakages. The wellbore integrity of a test well was detected by this method. Two leakage points in the production string and the leakage types were identified. The research and field tests indicate that the proposed method can accurately identify the failure types and locate the failure points of wellbore integrity in deep oil and gas wells. This study provides technological support for the construction, workover, and wellbore integrity management of deep oil and gas wells.