[Objective] The characteristics of soil salinization on the coastal wetland of Jiaozhou bay were studied to provide scientific basis for coastal wetland conservationof Jiaozhou bay and regional soil salinization prevention.[Methods] Based on the tests of soil pH value

conductivity and main salt concentration of layered soil samples

four typical coastal wetlands of Jiaozhou bay including Phragmites australis wetland

Suaeda glauca wetland

the barren wetland and Spartina anglica wetland were sampled in August 2014.[Results] The soil salt contents ranked as:Phragmites australis wetland < Suaeda glauca wetland < barren wetland < Spartina anglica wetland

the salinization type of the above transited from sulfate-chloride type to chloride salinization soil type. In terms of the vertical distribution

soil salinity were obviously accumulated at surface soil layer in Spartina anglica wetland and Phragmites australis wetland; while soil salinity was accumulated at deep soil layer in Suaeda glauca wetland and barren wetland. Except for CO32- and HCO3-

other main salt ions contents in coastal wetland of Jiaozhou bay were consistent with total salt content and conductivity. Main salt ions contents in soil ranked as:Cl- > Na++K+ > SO42- > Mg2+ > HCO3- > Ca2+.[Conclusion] The coastal wetland soils of Jiaozhou bay had severe soil salination

and the soil salt content increased from Phragmites australis wetland to Spartina anglica wetland. The wetland soils in Jiaozhou bay was non-alkalized and the sample salt contents in it varied oppositely

whereby

the wetland plants were affected by the potential poisons of soda alkalized soil.