In order to increase the water content of microcapsules and reduce the dosage of fillers，a new in-situ interfacial polymerization process for ultra-high water content sorbitolaqueous solution microcapsules was reported. Using sorbitol aqueous solution as the core material，toluene-2，4-diisocyanate（TDI） and diethylenetriamine（DETA） as interfacial polymerization monomers，the dispersed phase was injected into the continuous phase as small droplets，and an in-situ reaction began to form microcapsule wall material at the moment ofcontact between the two phases，obtaining the microcapsules with a water content of up to 80%. The camouflage coating with the prepared microcapsules exhibited a reflectance spectrum similar to that of green plants in the 400-2 500 nm wavelength range，with a spectralsimilarity of 0. 929 6 to holly leaves. The unit area weight of camouflage coating was only 213. 9 g/m² and the adhesion level was 2. When the prepared microcapsules with high watercontent were used in camouflage coatings，advantages such as lightweight，less usage and high spectral match with plants were achieved，showing promising applications in countering hyperspectral detection.