It was effective for a dosage of herbal medicine to treat hyperemesis gravidarum, threatened abortion and prevent hard labor. We prescribed Kakambosengtang for 15 patients of hyperemesis gravidarum which had weakness of the spleen and stomache, Kakamdalsengsam gyoaesamultang for 10 patients of threatened abortion which had weakness of vital energy and blood, Kakamdalsengsan for 12 patients of preventing hard labor. The result was that the whole syndromes improved. And the healthy baby was born. According to the above mentioned results, it is valid that the sick pregnant women would rather take herbal medicine rightly than avoid herbal medicine blindly.