Experiment of grazing stubble height on Puccinellia chinampoensis Ohwi were studied in the paper.The results showed that growing rate of Puccinellia chinampoensis Ohwi was influenced by different grazing time and stubble height.The optimal grazing time of it in spring was when forage height was 12-15 cm（about 20-30 April） and grazing stubble height was about 6.0 cm.