Abstract: This article takes the study of elevator speed limiter calibration and its quality control points as an example. First, it explains the working principle of elevator speed limiter, then introduces the content and method of calibration, and finally analyzes the key points of its quality control, including confirmation onsite calibration Conditions, do a good job in site verification and control measurement error and control the correlation of the speed limiter action speed, in order to provide reference for related applications.