A scheme is proposed for remotely preparing a two-qubit state by using four-qubit cluster state as the quantum channel. In the scheme, the success probability of preparation and classical communication cost are calculated. In general, Bob can successfully prepare the target state with the probability 1/4 and consume only 1/4 bits classical communication. However, if the state belongs to six special situations, the success probability of preparation can reach 1/2 or even 1 after consuming some extra bits.