To investigate the influence of rice and frog eco-planting on different forms of phosphorus content in paddy field，the rice variety of Jiahe 218 and frogs of Hoplobatrachus.chinensis were used in this study.Distinct types of inorganic phosphorus，available phosphorus contents and the composition of rice yield were measured at intervals during the planting process，and the field treated with chemical fertilizers was used as a control.Results showed that，during 10 to 90 d of frog culture planting，different change trends in different forms of phosphorus contents were shown in the experimental field and control field.Ca2-P content reduced continuously in both fields，however，the contents of Ca8-P，Al-P，and Fe-P in both fields increased at the initial stage and then decreased.Continuous increases in the contents of Ca10-P and O-P were observed in both fields.However，the contents of all types of inorganic phosphorus，total inorganic phosphorus and available phosphorus in the treated field were significantly lower than those in the control field(P<0.05).Thus，the results indicated that，after 90 d of eco-plantings of rice and frogs，the contents of different type inorganic phosphorus and total inorganic phosphorus were all decreased.For preventing phosphorus deficiency in rice and frog eco-planting field，it needs to replenish the specific amount and proportion of P fertilizer.The results of this study provided new theoretical guidance for nutrient management of rice and frog eco-planting in the paddy field.