The evolution of salt accumulation in greenhouse soils in Liaoning province was studied in this paper.The results indicated:(1)The salt contents of greenhouse soils were much higher than those in the corresponding open field soils.The average of the salt contents in 020 cm layer of greenhouse soils was 2 685.46 mg/kg (CV=58.0%) in Shenyang and 1 274.25 mg/kg(CV=40.5%) in Beining. (2)The highest salt content was found in greenhouse soils used for about 4 years, mean salt content and EC were 1861.28mg/kg and 0.53 mS/cm,respectively. (3)Compared with neighboring open field soils,the contents of every ion were all increased a lot in the greenhouse soils and among them, NO_3~-,SO_4~(2-) and Ca~(2 ) were accumulated much more than any others.(4)The salt moving downwards to the bottom soil(80100 cm) and salt accumulating upwards to the topsoil(020 cm) were very obvious in greenhouse soils.The content of each ion was decreased accompanying with deepening profile. The accumulation of NO_3~- and its moving to the bottom soil in the greenhouse would have some bad effect on the environment.