Motor transmission mechanism

Disclosed is a motor transmission mechanism. According to the utility model, the structure of an existing coupling or belt pulley connected with a motor spindle (8) is designed into a split-type structure, and subjected to standardized design so as to improve the versatility; a taper reduction sleeve (5) is fixed on and connected with the motor spindle into one as a standard interface of a motor; then a transmission part (1) is connected with the taper reduction sleeve into one; as the structure, other than the transmission part, can be subjected to standardized design, the transmission between the motor of the same model and different test run devices can be achieved only by replacement of corresponding transmission part for different test run devices; and therefore, the structure is especially suitable for test run of devices before leaving a factory. Compared with a conventional structure, the utility model has the advantages of easy usage, easy manufacture, good versatility, high standardized degree and low manufacturing cost.