The quantum dot array consisting of a uniform and orderly quantum dot based on one-dimensional linear real space lattice of tight-binding model was investigated, and the evolution operator was used to transfer a single qubit in a spin chain of quantum dot array. That is to say, the information of one-qubit is transferred to the terminal state from the multi-particle state |110203…0N-10N> of initiating terminal of the quantum dot array |010203…0N-11N> with the evolution operator exp(-iλt?H). The probability was calculated. The results show that it is possible that the information of one-qubit is transferred from the first qubit of initiating terminal of the multi-particle state |110203…0N-10N> to the N qubit of the end of the terminal state |010203…0N-11N>.