The invention provides a body part measurement method and device, and a PLC of a measurement work station. The method comprises steps that the identity information of a measured object is acquired; whether the identity information matches a pre-issued measurement task is determined; if yes, the configuration information corresponding to the identity information is obtained through analysis, the configuration information is sent to a measurement control system to obtain a measurement program in matching with the identity information from a pre-stored measurement program database, and the measured object is measured according to the measurement program; general programs and specific programs are stored in the measurement program database. The method is advantaged in that required measurementprogram blocks are called up from the program database according to different vehicle model configurations, the workload of preparing measurement programs is reduced, and the error rate of the programs is reduced.