In an augmented reality system, the virtual objects are superimposed on the real scene. In order to integrate the virtual objects into the environment more realistically, it is necessary to estimate the illumination in the scene. An illumination estimation method was proposed, which was suitable for multiple reflection phenomena for scenes with only diffuse reflection or scenes with both diffuse and specular reflections. In this method, a camera was used to shoot multiple-view images, and the presence of specular reflection in the scene was identified by detecting the specular highlights of each view image. If there was no specular reflection, then a single diffuse image estimation lighting algorithm was used to perform multi-view images illumination estimation. If there existed specular reflection, the information provided by the specular reflection was a priori knowledge and then the diffuse reflection estimation illumination method was used to obtain the final result. The experimental results show that this method improves the accuracy of the illumination estimation of multiple reflection phenomena.