A multifunctional linked fitness equipment has an elongated bottom, a seat stand, a front support frame seat pivotally mounted on a front end of the elongated bottom, a rear support frame seat pivotally mounted on a rear end of the seat stand, a link pivotally mounted between the front support frame seat and the rear support frame seat, a front support frame pivotally mounted on the elongated bottom and the front support frame seat, a rear support frame pivotally mounted on the elongated bottom and the rear support frame seat, and at least one resilient member mounted between the rear support frame seat and the elongated bottom. By combining or detaching the front support frame, the rear support frame or the seat stand with or from positioning pins, the fitness equipment can be utilized to selectively exercise the abdominal muscles and the legs based on the users' demand.