A foldable motorized vehicle includes a frame connecting mechanism and a frame locking mechanism. The frame connecting mechanism comprises: a pair of first slide rails, a pair of second slide rails, a pair of first connecting members, and a pair of second connecting members. The front end portions of the first slide rails are fixedly connected to a front frame, the rear end portion of the second slide rails are fixedly connected to a rear frame. The front end portions of the second slide rails are supported on the rear end portions of the first slide rails, creating a slidable connection between the first slide rails and the second slide rails with the first connecting members and the second connecting members. The frame locking mechanism comprises a handle, a cable tube, a cable, a mounting base, a compression spring, and a stopper.