Abstract: In order to increase the magnetic levitation force of Inertial Confinement Fusion (ICF) glass target pellets, the temperature control accuracy of heat treatment is required to be very high by means of crystal state regulation of metal oxide coating on the surface of the glass target pellets through heat treatment process so as to enhance the magnetic properties.At present, the temperature measurement method based on circular graph recorder cannot satisfy the requirement of ICF when analyzing the heat treatment temperature in real time and multimodal. This paper proposes multimodal reconstruction method for precision heat treatment temperature measurement. First, the process temperature data is digitalized and transferred, and then reconstructed and multi-modally analyzed in the computer, finally based on spatial topological relations and characteristic parameters calibration results, using Corexy mechanism to realize multimodal reconstruction of heat treatment temperature. The results show that the proposed method can realize the single mode separation and multimodal reconstruction of the temperature control process, and the implementation error is generally less than 5%.This method can provide abundant heat treatment temperature data for precise physics experiments.