硫酸盐岩和碳酸盐岩常共同分布，以往多是分别研究其岩溶发育。文章主要从自然条件上研究两者复合岩溶发育的机理，探讨了化学岩溶作用过程和生物岩溶作用的机理。复合岩溶中，陷落柱是很重要的一个特征。文章也探索了复合岩溶作用中，有关岩溶地下水的水质情况。

Sulphate rock and carbonate rock both are usually distributed together, but their karst deve -lopments are most studied separately.It is mainly to research the compound karst developmental mechanism between the two soluble rocks,which are involved in the chemical karstification and the biological karst processes.The karst collapsed column is a special karst hazard of the compound karst,and the karst underground water quality is also discussed.