The invention relates to a Chinese medicinal composition for loosening bowel and relieving constipation, which is prepared from the following raw materials in part by weight: 10 to 25 parts of desertliving cistanche, 10 to 20 parts of radishseed, 10 to 20 parts of cassia seed, and 10 to 25 parts of bighead atractylodes rhizome. The prescription of the Chinese medicament composition has the advantages of precise formula, obvious effect, wide source of raw material medicaments, and low cost. Due to simple formula, the medicament quality control is simple. The Chinese medicinal composition is prepared into a soft capsule preparation according to the characteristics of active ingredients thereof, the quantification is accurate, after the composition is disintegrated in vivo, the contents can be quickly absorbed in a liquid form by the body; and the soft capsule has smooth surface and good mouthfeel, and is easy to take. Through clinically primary pharmacodynamic validation, the composition has definite curative effect particularly on middle and old aged constipation patients, quick response, no toxic or side effect, safety, effectiveness and safe portability, and convenient . The clinical experiments prove that the Chinese medicinal composition has the effective rate of over 90 percent and has excellent application prospects and market prospects.