A symmetric four-roll plate rolling control method comprises the following steps of online monitoring of a curvature, online recognition of an elastic recovery rule and online prediction and control of final rolling reduction. According to the symmetric four-roll plate rolling control method, plate rolling is intelligentized and does not depend on worker experience, the labor intensity is reduced,the production efficiency is improved, and the plate rolling precision is guaranteed. The control method is independent of the material mechanical properties of plate materials, and a forming rule can be recognized and corrected in real time, so that forming achieves the optimal effect. Optimal plate rolling control conforming to production conditions of different plate rolling manufactures can be given according to the equipment conditions of the different plate rolling manufactures.