For M-sender independently share the classical knowledge of a quantum state, a scheme for joint remote preparation of an arbitrary two-qubit state by GHZtype states as the quantum channel is presented. It is shown that the receiver can reconstruct the original state with certain probability under the condition that only and only if all the senders collaborate with each other. The singlequbit and two-qubit projective measurements are needed in our scheme. We also discuss some information-splitting methods which can make the receiver obtain the unknown state.