Abstract: It is discussed that the seismic action and wind loads of portal frames. The difference between the calculations of wind loads by the standard(GB 50009-2001) and the specification(CECS 102:2002) is analyzed and compared; the conbination of seismic actions in an area with seismic intensity 7 is also compared with that of other loads. The calculations of wind loads on different conditions are proposed and the solution of whether an aseismic checkout is needed in an area with seismic intensity 7 is also given.