Abstract: Based on the forest management inventory data of Casuarina equisetifolia fast-growing plantation in Wenchang, Hainan province in 2005, the forest growth and yield model system was established by using parameter replacement method. The model system takes the stand dominant height model as a basis, the stand basal area forecast as the centre and the stand volume as target variable. The results showed that: each model in the model system had much higher precision and a good adaptability, the difference between estimated value and observed value was not significant by testing, indicating that the dominant height, basal area and volume growth of C. equisetifolia can be properly evaluated. Therefore, this model system can be put into use to estimate the growth and yield of C. equisetifolia fast-growing plantation in the research area. The method of establishing model system can provide a reference for developing growth model and other similar models based on one-time data. And it can also provide theoretical basis for forest management plan of forest management units, which lack of site-specific long-term observation data and a large amount of stem analysis data at present.