A series of hydrotalcite materials are prepared using hydrothermal synthesis meth- od,and their spectral near-infrared water absorption peaks are tested using a visible near-in- frared spectrometer to simulate the near-infrared water peaks in jungle camouflage coating materials.The influence of experimental conditions on the size of water peaks is explored.A PSO-RBF predictive model is constructed using partial serpentine spectroscopic data and veri- fies the reliability of the model.The validation results indicate that the predictive accuracy of model exceeds 90%,demonstrating excellent practical capability.Employing the predictive model to forecast the development of serpentine facilitates the determination of optimal prep- aration conditions,thereby reducing experimental time and further enhancing the water ab- sorption peak of traditionally synthesized serpentine products for camouflage applications.