[Objective] This paper mainly studied the phosphorus speciation and release law in the soil of coal mining subsided area, to know the phosphorus pollution characteristics.[Methods] Phosphorus content and fractions in the soil of NO.1 Panji subsided area were analyzed using sequential extraction method, and the release characteristics of phosphorus in the soil were studied using the columnar sample simulation experiment.[Results] (1) Total phosphorus(TP) content in the soil varied from 103.58 mg/kg to 489.89 mg/kg, and the average content was 248.47 mg/kg; (2) Bioavailable phosphorus(BAP) content varied from 86.94 mg/kg to 378.24 mg/kg, accounting for 43.53%~91.12% of TP; (3) The cumulative release quantity of TP was in the following order:pH=12 >pH=3 >pH=6 >pH=8 >pH=10 >pH=4.[Conclusion] High potentiality of phosphorus release had been discovered by the research of soil in coal mining subsided area. In different pH conditions, the releasing strength of phosphorus was ranked as:alkaline>acid>neutral.