A wet type double-clutch connecting device is a dynamic drive connecting device of product detection, which is used for the wet type double-clutch performance test of an automated derailleur. The input shaft of the device is opened a castellated groove castellated-connected to the input end of the wet type double-clutch. The two ends of the shell are arranged with input end shell and output end shell using the sealed points to seal; the central pore of the input end shell is gap-cooperated with the input shaft being sealed by a sealed ring; the sleeve is sleeve on the oil groove of the wet type double-clutch general output end; and the sleeve is opened control oil pores; the output end shell is opened with control oil pores and the cooling, lubricating oil pores; the output end shell is sealed by an output end cover; the output shaft comprises the first output shaft and the second output shaft respectively castellated-connected to wet type double-clutch general output end. The invention can enhance the test precision of the torque converter, and simplify the preparing process of the test. The preparation cost is low and the performance is significantly enhanced.