The improvement of clinical symptoms,the incidence of hypertensive disorder complicating pregnancy and growth of fetal with osteoform compound calcium acid chelate capsule in pregnancy were studied.The results indicated that the incidence of ca deficiency symptoms,hypertensive disorder complicating pregnancy and growth-limit of fetal were decreased by using osteoform compound calcium acid chelate capsule in pregnancy,and it was favorable to both mother and her infant,no reaction of badness.