The invention discloses a motorized treadmill same running belt forward operation and reverse operation switching device and belongs to the field of health and fitness facilities. The motorized treadmill same running belt forward operation and reverse operation switching device comprises an instrument control panel, a three-section type switch, a left signal data line, a right signal data line, a left motor, a left motor controller, a left motor rotor, a right motor, a right motor controller, a right motor rotor, a front rotary drum, a front rotary drum left traction wheel, a front rotary drum right traction wheel, a left traction belt, a right traction belt, a running belt, a running board and a rear rotary drum. The motorized treadmill same running belt forward operation and reverse operation switching device is characterized in that a forward traction system and a reverse traction system which are not mutually interference are arranged in front of the same running belt, the left traction system has a forward walking and running function, and the right traction system has a reverse walking and running function. The switching between forward walking and running and reverse walking and running is very convenient and safe.