The rice varieties including ‘Jijing 809’ and ‘Jijing 88’ were used as materials to develop harvest experiment of stage. The grain quality related indexes were measured. Effects of different harvest periods on grain quality were studied. The results showed that the head rice rate,percentage of chalky,chalkiness degree,amylose content,gel consistency and protein content were all affected by harvest stages. The head rice rate of ‘Jijing 809’ reached up to 70%,percentage of chalky was lower when it was harvested on September 20 th. The head rice rate of ‘Jijing 88’ was 73.4% when it was harvested on September 20 th. The appearance quality of rice could be improved when it was harvested 5-10 days later,but the milling quality of rice was lower,the differences of the percentage of chalky and chalkiness degree were significant compared with those harvested.