In the case of being lack of ancient rice,the signs of ancient rice husks(SARH) are one of a experienced way for the differentiation of ancient rice,and can contribute a lot in understanding the characteristics and evolution state of ancient rice.According to the survey of 100 husks bi-peaked tubercles of M104 with SARH way,it is implied that the ancient rice in Shixia ruin is a mixed category and reflects the developing stage of ancient rice, and showed that ancient rice in Shixia ruin is unclearness and divideness between hsien and keng rice.It suggested that the ancient rice in Shixia ruin has played an important role in the origin and evolution of cultivated rice.