Abstract: The lever structure of the the horizontal tunneling magnetometer could be designed as the straight and the fold.The mass elastically system of the straight lever structure was established through the geometry model,but this way was used in the fold lever structure difficultly.In this paper, Using the finite element analysis（FEA） simulation,by comparing the displacement between the single fold lever and straight lever with the equivalent external force action,equations of the elastic coefficient and driving voltage were indirectly deduced.Furthermore,the modal shapes from the 1st order to the 4th order of both the single fold lever and the straight lever were analyzed.It was found that the modal shapes from the 1st order to the 3rd order of the single fold lever are the same with those of the straight lever,and the modal shape of the 4th order of the single fold lever included the movement of turning around on X axis and Z axis,which the turning around on Z axis was a main one.