In order to verify the effect of continuous cropping obstacle in Pinellia ternata,P.tematawere planted in continuous cropping,with 2and 4years planting of Pinellia ternata,the biological test of replanted soil was conducted,and then P.ternatatuber were planted in 2-year rotation soilas treated by disinfection of soil and tuber,also cooperated with cropping fertilizer which be mitigated disorder effects on P.ternata.The agronomic characters and yield were investigated by the field of statistics,and also meas...