Protection calibration test method for turbocharger

The embodiment of the invention discloses a protection calibration test method for a turbocharger. The method comprises the steps that matching calibration of an engine pedestal of the supercharger is completed, and original protection parameters of the supercharger are obtained; loading and heating the engine; the test stage comprises the steps that S101, a first gear is engaged for full-accelerator acceleration operation; s102, after the rotating speed of the engine reaches the highest empty rotating speed, an accelerator is loosened; s103, after the rotating speed is reduced to the first rotating speed value, the accelerator is fully started; repeating S102 to S103 until the rotating speed is reduced to a second rotating speed value; s104, protection parameters of the supercharger in the step S102 to the step S103 are obtained; s105, when the protection parameter change data is not in the limit value range, optimizing the engine parameters, and repeating the steps S101 to S104 until the protection paramete