The invention relates to a metering type special change acquisition terminal upstream channel detection method special for an automatic calibration system. The metering type special change acquisition terminal upstream channel detection method special for the automatic calibration system includes the following steps that A, special change III is transmitted to an automatic calibration device through an automatic calibration line, the automatic calibration line is an SGCC (state grid corporation of China) standard special change III automatic calibration line, a plurality of detection devices are sequentially installed on the automatic calibration line, a testing terminal of each detection device is a 485 terminal, and a jacking stop mechanism is correspondingly installed on each detection device; B, jacking positioning is performed for the special change III; C, the 485 terminals of the special change III are connected through connectors, and a related upstream communication function test is performed through the 485 terminals. The metering type special change acquisition terminal upstream channel detection method special for the automatic calibration system is reasonable in design, simple in structure, and convenient and fast to operate, performs correlation detection for the special change III on an automatic calibration flowing line, performs upstream communication terminal connections through the 485 terminals, transmits related detection experiment data to a production scheduling management system through a software system, and completes the whole detection process.