Device and method for calibrating electronic control units of automobiles on basis of CCP [CAN (controller area network) calibration protocol]

The invention provides a method for calibrating electronic control units of automobiles on the basis of a CCP [CAN (controller area network) calibration protocol]. The method includes reading current S19 files in first memories and explicitly writing mapping addresses and initial values of various implicitly stored calibration parameters into a second S19 files; parsing the second S19 files, acquiring the mapping addresses and the initial values of the various calibration parameters, calibrating the to-be-calibrated electronic control units of the automobiles in an online manner after calibration commands are received, and acquiring calibration parameter values which are calibrated in the online manner; replacing the initial values of the various calibration parameters in the current S19 files in the first memories by the various calibration parameter values which are calibrated in the online manner. The method has the advantages that the complexity of a system for calibrating the ECU (electronic control units) of the automobiles can be reduced, and the production cost and the labor cost can be lowered.