The engine is the core part of an airplane and its wire performance has a direct important impact on the safety. The detection of the engine wire fault costs much time and effort in the maintenance nowadays. Based on that, the technical data are well determined in the database of the fault diagnosis on airplane engine wire is presented in this paper. And furthermore, the function and operation of the database are given too. The time can be reduced and the efficiency can be improved significantly in maintenance by utilizing the database presented in this paper.