Ni/MgO and Ni MgO/MgO catalysts for partial oxidation of methane to syngas were prepared by ordinary impregnation method and impregnation promoted by supported salt. The catalytic performance were characterized by TPR, TPO, TPMC (Temperature Programmed Methane decomposition Carbon deposition) and activity examination techniques. The results showed that Ni MgO interaction of the promoted catalyst is stronger than that of the common one, and the resisting carbon deposition ability of the promoted catalyst is increased. Therefore the activity and selectivity of the promoted catalyst are enhanced. Ni / MgO and Ni MgO / MgO catalysts for partial oxidation of methane to syngas were prepared by ordinary impregnation method and impregnation promoted by supported salt. The catalytic performance were characterized by TPR, TPO, TPMC (Temperature Programmed Methane decomposition Carbon deposition) and activity examination techniques. The results showed that MgO interaction of the promoted catalyst is stronger than that of the common one, and the resisting carbon deposition ability of the promoted catalyst is increased. Therefore the activity and selectivity of the promoted catalyst are enhanced.