Disclosed is a Chinese herbal medicine composition having a moisture-retaining effect, containing water and/or solvent extracts of raw materials in the following parts by weight: 20-50 Asparagus cochinchinensis, 20-50 rehmannia root, 10-40 Dendrobium nobile, and 10-40 Dioscorea opposita. The composition can assist skin against drying in a dry environment, and prevent moisture loss.