Abstract: A bicycle pedal structure includes a pedal body having an axle bore; an axle member axially passing through the pedal body and rotatably combined with the pedal body, with the connection portion of the axle member combined with a crank of a bicycle; and an end cap having a combination portion which is removably combined with another combination of the axle member. The combination bore of the end cap is allowed to be combined with a corresponding tool for driving the axle member to rotate. With such a removable end cap, the replacement of the end cap and pedal components is facilitated.