The paper designs the software system for engine ECU data communication which is based on LabVIEW 8.6 platform. MW60C as a Bus interface, then in LabVIEW platform make use of Call Library Function Node (CLN) to call dynamic-link library (DLL), realizing the engine ECU and computer data communication. Then visit the LabVIEW Database package LabSQL, building the Access database, realize the data storage, management and querying. Experiments show that system has the advantages of simple programming, convenient human-computer interaction, short development cycles, so this research has some practical value.