The properties of liquid crystal light value (LCLV), including the response curves between input and projection beam in real, inversed, and differential state, also the relationship between the transmission of the liquid crystul and the working voltuge when different input beam lumination provided, are measured by facile method. The analysis to the experimentul results revealed the nonlinear transforming properties of LCLV, which have not been thoroughly researched be fore. A solid base for a great deal of its applications is provided and the direction of further development is presented.