Zeolite 4A with good quality is synthesized in semiwork microwave oven on the basis of successful synthesis of zeolite 4A from kaolin in household microwave oven, and the weight of the product can reach kilogram grade every time. 以高岭土为原料在家用微波炉合成4A分子筛的基础上,扩展到半工业微波炉上合成了质量较好的4A分子筛,产物的质量可达公斤级。