Mangrove solochak is a special type of soil under mangrove vegetation. Soil pH value varies from 3.08 to 5.98 with the soil layer in the mangrove solochak in Leizhou Peninsula, but often below 4. The average content of organic matter in the soil is 24.1g/㎏. There's no certain rule for distribution of organic matter in the soil profile. The cation exchange capacity in the soil ranges from 3.83cmol/kg to 14.53 cmol/kg, averaging 6.94 cmol/kg. The content of soluble salt varies from 7.6g/㎏ to 42.1g/㎏, with an average of 18.4g/㎏, showing a downward eluviation trend. The proportion of particles less than 0.01mm is usually more than 200 g/kg in the soil, and the texture of the soil is medium loam to medium clay.