Abstract: Based on elastic shell theories, egg curvature formulas were deduced, the stresses of eggs under uniform load were calculated, and experiments were conducted to verify the correctness of the formula. The results show that: until rupture occurred, eggs can bear bigger loads on the poles than on the equator. At the middle points of the eggs, the stress along the longitude is less than that along the latitude, so eggs are broken more severely along the longitude. The analysis results were in accordance with the result of experiments, so it can provide theoretical references for package, produce, transportation and egg-processing equipment design of eggs.