A traction switching device, comprising a push-pull button, a manual button, an upper casing, a pulley, a lower casing, a reset spring, wherein the lower casing is provided with a first slot; the push-pull button is imbedded in and sliding back and forth along the first slot; the manual button is sleeved on the hole corresponding to the push-pull button and simultaneously is installed at the position corresponding to the lower casing and the upper casing; the pulley is installed at the central axis of the lower casing; the reset spring is installed in the manual button. The traction switching device is featured with manual, flexible and easy operation, applicable to all domestic pets. By pulling the push-pull button while pressing the manual button, the traction switching device is fully locked; conversely, the traction switching device is unlocked by the push-pull button.