The invention relates to a shifting device for a tandem vibratory roller. The device is characterized by comprising a shift control handle (1), a handle controller (2), a shift changeover switch (3) and a running variable pump proportional electromagnetic valve coil (4), wherein the input end of the shift changeover switch (3) is connected with the output end of the handle controller (2); the output end of the shift changeover switch (3) is connected with one end of the running variable pump proportional electromagnetic valve coil (4); the input end of the handle controller (2) is connected with the OUT+ end of the shift control handle (1); and the OUT- end of the shift control handle (1) is connected with the public end of the handle controller (2) and the other end of the running variable pump proportional electromagnetic valve coil (4). The invention ensures that a running hydraulic system of the tandem vibratory roller can realize changeover of shift under combination of a variable plunger pump and a quantitative plunger motor, and the cost of the quantitative plunger motor is only about half of that of the variable plunger pump. The design can effectively control manufacture cost, and realize shift requirement of a user on the tandem vibratory roller.