The invention discloses a comprehensive test platform for regulation and control capability of an electromagnetic regulation and control roller and a test method thereof. The platform is symmetricallydistributed on the whole, wherein tension curling mechanism are located on the two outer sides of the platform and are each provided with a conveying roller mechanism; rotating speed sensors and tension meters are arranged in conveying roller bearing seats, and the rotating speed sensors and the tension meters form a plate thickness AGC closed-loop control system together with two side plate speed meters and plate thickness instruments; and rolling mill roller in the test platform is the electromagnetic regulation and control roller, an external variable frequency power supply is used for driving, a high-precision displacement sensor is used for detecting, and a roll shape curve calculation device is used for realizing roll shape regulation and control, so that the test and calibration ofthe roll shape curve of the electromagnetic regulation and control roller are completed. The invention further discloses specific steps of the test method which utilizes the comprehensive test platform for regulation and control capability of the electromagnetic regulation and control roller. According to the test method, the roller shape can be accurately regulated and controlled on line, and anew research method and idea are expanded for industrial experiments.