In order to explore the effects of different flooding depths and flooding durations on the growth and yield of mid-season rice during the jointing-booting stage，this study selected Ganwanxian 37 to conduct a pot experiment.Three submergence depths of 1/2（H1），2/3（H2）and full flooding（H3）and three submergence durations of 3 d（T1），6 d（T2）and 9 d（T3）were set to analyze the effects of waterlogging stress on the plant height，tillering，chlorophyll content，yield and composition of mid-season rice.The results showed that waterlogging stress significantly promoted the plant height elongation of mid-season rice，and the elongation was the largest under 2/3 plant height flooding treatment.After the stress was relieved，the plant height showed a three-stage recovery model of“short-term stagnation-compensatory growth-ultimate stability”.Submergence stress significantly inhibited tillering growth and chlorophyll relative content of mid-season rice，and the inhibitory effect gradually increased with the increase of submergence depth and submergence time.The yield reduction of H2T2 was the smallest with 6.88%，and the yield reduction of H3T3 was the largest with 26.6%.Regression analysis showed that the dominant factors of yield loss were seed setting rate and effective panicle number.