Abstract: Fourier Telescope as a new technology for opto-electronic surveying has become one of the first-select technology for surveying deep space target with high precision. For advance the engineering evolve of practices system, the segment support module of Fourier Telescope field experiment collecting light mirror is designed in this paper. Mirror support and angle adjust framework are designed individually in series. Axial support adopts three flexible diaphragm balanced along 120°, in this way, the influence of thermal deformation to mirror surface figure can be reduced well. Central diaphragm flexure provides Lateral position to the segment and the gravity is loaded by six point lever hammer. Angle adjust framework drived by three screw pair and three FOD are realized. With the finite-element analysis, PV is 200nm and PMS is 40nm, the change of curvature radius is less than millimeter. It also has some reference values for support of thin mirror.