The invention discloses a drug for treating pregnancy-induced hypertension. The drug comprises the following active ingredients by weight: 20g of ganoderma lucidum, 20g of stir-baked cortex eucommia, 20g of herba taxilli, 15g of dipsacus asperoids, 15g of citrus chirocarpus, 15g of rhizoma dioscoreae, 10g of silybum marianum, 10g of radix puerariae, 10g of dogbane leaf, 10g of lotus leaf, 10g of concha haliotidis, 10g of hawthorn, 10g of stigma maydis, 5g of christina loosestrife herb, 5g of Chinese pyrola herb, 5g of radix scutellariae, 5g of radix codonopsis and 5g of radix glycyrrhizae. The traditional Chinese medicine is used for treating pregnancy-induced hypertension, so that the total efficiency can achieve 100%, and the normal growth of fetuses is not influenced.