Abstract: The results obtained by studying soil-P fixation and release in west reclaimed area of Panzhihua showed that total P and available P were low in all newly reclaimed soils and that available P increased after they were soaked in water for 4 days. According to soil P fixation characteristic, the studied soils were divided into two kinds. Red soil and newly cultivated heavy loam, the first kind, were resemble to target soils (vegetable growing soil and paddy soil), they had high P-fixation, low P-release rate; whereas bleached soil, waste land soil, sloping dry-land soil and newly cultivated sandy soil were the second kind, had low P-fixation, high P-release rate. In the three absorption models, Freundlich and Temkin equation were significantly correlated to P fixation data, and the Freundlich equation was the more , but the Langmuir equation only fit some data.