It is well known that consecutive cultivation of vegetable in greenhouse and high input of chemical fertilizers would result in over accumulation of salts in soils, consequently leading to significant decreases in yield of a wide variety of crops and farming soil destruction.The secondary salinization of soil are increased seriously in China as greenhouse cultivation growth because of the poor irrigation system without proper drainage and inorganic fertilizer management.There are a great of reports available for the potential application of Trichoderma against a variety of plant disease, however less work is specifically conducted in the aim of reducing soil saline level by using Trichoderma agents.