To explore the compatible mechanism and the clinical significance of Plantago asiatica. P.asiatica matches with Aconitum carmichaeli and Cinnamomum cassia to cure chronic nephritis

with Clematis armandii and Lysimachia christinae to cure ureter stones;with Houttuynia cordata and Prunus armeniaca to cure chronic tracheitis

with Dioscorea opposita and Coix lachrhryma-jobi L.var.mayuen(Roman)Stapf. to cure ulcerative colitis

with Haliotis diversicolor and Ostrea gigas to cure hypertension.Then we get the kinds of clinical effect of different compatibility of P.asiatica. Plantago asiatica can cure many diseases with different chinese herbs and then its effect and the mechanism of different compatibility in clinics are determined. Plantago asiatica is of more importance in clinics for its different principles and functions of compatibility.