The invention provides a titanium-base methanated catalyst, a preparation method of the titanium-base methanated catalyst and an application of the titanium-base methanated catalyst. Due to a high mutual function of nickel oxide-titanium dioxide and the large specific surface/the large pore volume and the high heat resistance of a titanium-zirconium composite carrier, after magnesium oxide and a microporous thermal insulation material are added, the good heat resistance of the catalyst can be improved, so that the catalyst which integrates various advantages and can be used for the methanation of the high-concentration carbon monoxide and carbon dioxide (wherein CO+CO2 is larger than or equal to 10%) in a hydrogenating way can be obtained. The catalyst has the physico-chemical property that the bulk specific weight is 0.6-1.1kg/L, the specific surface is 120-200m<2>/g, the pore volume is 0.2-0.5mL/g, and the condtion that the pore size distribution is 80-120 (angstrom) accounts for 80%; and the catalyst has the catalytic activity that the activating temperature is 250 DEG C, the heat being at 750 DEG C can be resisted, the activity of CO+H2 is more than 98%, and the CH4 selectivity is more than 97%.