Abstract: The pseudo-random number generator,especially in the field of cryptography stream cipher,has a pivotal position,usually producting by a physical device or algorithm to produce.Variant logic system provides a pseudo-random number sequence generating method.The new variable-valued logic pseudo-random number generator designed to take advantage of changes in value in two specific operational logic theory and based on variable-valued logic framework,adding randomly generated sequence to improve the performance of control mechanisms.The variant logic generating under the chareyrng theoretical frarnevwrk has a very long cycle and great control parometer spate.0,1 eventually generated sequence is segmented into 16bit comparative analysis plot and shows excellent random properties.