The aim of this work was to study the effects of angle drop process on the stress and strain of JG3 Military Synthetic Brake Fluid small packages in the packaging box when using corrugated cartons with different thickness as transport package. ANSYS/LS-DYNA was applied to carry out angle drop simulation test for JG3 Military Synthetic Brake Fluid packaged using corrugated cartons with different thickness. The effective stress and plastic strain data of the brake fluid small packages in the packaging box were acquired, and the characteristics of stress and strain under different transport package conditions were analyzed. With the increasing thickness of the corrugated carton, under the same angle drop condition, the overall effective stress and plastic strain of the brake fluid small packages in the packaging box decreased. In the thickest corrugated cartons, there were effective stress and plastic strain focus areas for some brake fluid small packages. The protection of the corrugated cartons to the packaged interior part with no cushion materials was not linearly correlated with the thickness of the corrugated cartons.