目的 开发一款非标准托盘尺寸优化设计系统，用以提高物流效率，降低物流成本。方法 使用托盘装载货物的平面利用率和装入运输工具的空间利用率进行双重约束，采用简单重叠式、正反交错式、纵横交错式、旋转交错式4种方式进行堆码，以单车装货量最高为优化目标构建优化算法。在此基础上设计优化系统，并进行算例验证。结果 按文中算例所给数据可得，最优的托盘尺寸为1 200 mm× 1 029 mm，对应的装载方式为正反交错。结论 该系统具有一定的实用价值，但是还存在堆码装载物体形状以及堆码方式考虑不足的问题，还有进一步提升的空间。

The paper aims to develop a non-standard pallet size optimization design system to improve logistics efficiency and reduce logistics cost. The plane utilization rate of goods loaded on pallets and the space utilization rate of transportation vehicles are used for double constraints. The stacking is carried out in four ways:simple overlap, positive and negative interleaving, crisscross and rotation interleaving. The optimization algorithm is constructed with the highest loading volume of a single vehicle as the optimization objective. On this basis, the optimization design system is designed and verified by a numerical example. According to the calculation of the given premise data, the optimal pallet size is 1 200 mm×1 029 mm, and the corresponding loading mode is positive and negative interleaving. The system has a certain practical value, but there are still some problems, such as the shape of the objects to be stacked and the way of stacking, and there is room for further improvement.