An image forming apparatus includes: a transport unit configured to pinch and transport a recording medium at a first transport speed, a fixing unit configured to fix an image formed on the recording medium while pinching and transporting the recording medium, which is transported by the transport unit, at a second transport speed, a driving unit configured to drive the fixing unit, a detector configured to detect a load of the driving unit, and a controller configured to perform a control to adjust a speed difference between the first transport speed and the second transport speed with respect to a subsequently transported recording medium when the load becomes larger than a reference value after a peak value of the load when the recording medium enters the fixing unit is detected by the detector.