Objective To improve the heat insulation and cooling capacity of the existing chocolate packaging materials. Methods The cooling insulation coatings were composited in the chocolate packaging materials（150 g/m2） by coating to improve their insulation cooling capacity, and to relieve the problem that chocolate is easy to melt at high temperature. Results The insulation performance of the coated white cardboards was better than the uncoated white cardboards by 4~5 folds. The adhesion level determined in the adhesion test was 1-2, which met the requirement of actual use. Conclusion The results showed: it was feasible to improve the insulation cooling capacity of chocolate packaging materials (white cardboards) by composite insulation coating.