The invention relates to a mechanical running-in device of a direct current bypass switch. The mechanical running-in device of a direct current bypass switch includes a matrix, wherein a clamp assembly which is used for fixing the direct current bypass switch is arranged on the matrix. The mechanical running-in device also includes a dialing unit, wherein the dialing unit is used for driving an opening operating lever of the bypass switch to move; the dialing unit is provided with an initial position corresponding to the closing position of the opening operating lever and a destination position corresponding to the opening position of the opening operating lever; the matrix is also provided with a drive unit which drives the dialing unit to move to the destination position from the initialposition so as to drive the opening operating lever to move to the opening position from the closing position during the opening period, and driving the dialing unit to move to the initial position from the destination position before closing. The mechanical running-in device of a direct current bypass switch can replace man power, and coordinates with electric closing of the bypass switch to perform mechanical opening operation, thus greatly saving the man power, improving the situation that manual operation is not uniform in force application, and being very stable in the operating force.