The invention discloses a large-angle light servo structure for a space remote sensing precise instrument, and belongs to the field of space precise machinery. The servo mechanism comprises an effective load, a satellite platform and three electric pushing rods; the electric pushing rods are evenly distributed under the effective load and over the satellite platform, and the two ends of the electric pushing rods are correspondingly hinged to the effective load and the satellite platform through spherical hinge devices; unlocking devices are installed at the ends, connected with the satellite platform, of the electric pushing rods and used for limiting rotation of the spherical hinge devices at the ends; and the three electric pushing rods are evenly distributed on the outer edge of the effective load in the circumferential direction and incline towards the outer side of the effective load, and a 45-60-degree included angle is formed between each electric pushing rod and the satellite platform. The large-angle light servo structure for the space remote sensing precise instrument has the advantages that the mass is small, the rotating range is wide, and the high rotating speed can beobtained by adjusting the running speed of the electric pushing rods.