An elliptical exerciser includes a body having two foot support links and two rotation members. The rotation members are rotated about their respective rotation pivots to drive the foot support links to move along a supporting travel and a crossing travel to complete a closed pedal trajectory. The timing adjustment wheel is pivotally connected to the body. A distance is defined between the pivot of the timing adjustment wheel and either of the rotation pivots of the rotation members. Two connecting links are pivotally connected to the timing adjustment wheel. The lengths of the two connecting links are longer than the distance. When one of the foot support links moves within the supporting travel and rotates one of the rotation members, the timing adjustment wheel drives the other foot support link to move within the crossing travel and produces speed and phase differences to be more ergonomic.