In order to optimize the planning and design of public spaces such as landscapes and indoor spaces, and reduce spatial redundancy costs, a three-dimensional imaging method for indoor spatial layout based on light field reconstruction is proposed. The laser light field image analysis model of the indoor public space landscape layout is constructed by using the global illumination image. According to the lighting conditions and different surface material attributes of the indoor space layout, the three-dimensional optical flow field reconstruction model of the indoor space layout is established. The joint evaluation of the indoor public space landscape layout is conducted through the subjective perception and objective indicators, The method of analyzing the network structure model using mirror reflection rendering is used to decompose the three-dimensional details of indoor spatial layout. Through the reconstruction results of the light field, richer object information is obtained. Combined with the two-photon correlation imaging method, a three-dimensional imaging method for indoor spatial layout is constructed. Tests have shown that this method can effectively achieve the layout of indoor public space landscapes and improve the overall planning level of indoor landscapes. Its spatial redundancy cost is 4.173 m2, which can effectively reduce the spatial redundancy cost.