Soils from the wetlands under different vegetation communities ( Carex maximowiczii, Phragmites australis, Rumex acetosa Linn) were sampled to investigate the distribution of organic P, inorganic P and inorganic P forms in soil profiles. The results showed that inorganic P contents were ranged from 301.94 to 645.17 mg/kg, accounting for 52.59%–84.64% of total P in all soil profiles, while organic P contents were ranged from 78.40 to 254.27 mg/kg except for 0–6 cm layers under Rumex acetosa Linn. Ca-P and Fe-P dominated inorganic P in all soil profiles, accounting for 29.67%–67.58% and 21.9%–52.29% of inorganic P, respectively. Except for 0–6 cm layers under Rumex acetosa Linn, inorganic P contents decreased while organic P decreased seriously first and then increased with depth of soil profiles under all vegetation types. Except for O-P in 0–6 cm layers under Rumex acetosa Linn, Fe-P and Al-P contents decreased while Ca-P and O-P contents increased with depth of soil profiles. Al-P, Fe-P and organic P accumulated in surface layers under all vegetation types, especially under Rumex acetosa Linn. Plant uptake drives the form transformation and surface accumulation of phosphorus, while Ca-P is the main source of surface accumulated phosphorus.