The traditional transportation planning takes the microeconomics Walras equilibrium principle as its theoretical base. Transportation planning is revealed at the point of market equilibrium, and doesn't consider the market disequilibrium cases. Actually, an equilibrium state is a special disequilibrium. Under some market conditions, an equilibrium case can be realized. However, these conditions are very rigorous, we scarcely obtain them. Even if an equilibrium state is carried out, it is still temporary，and can’t represent the real market． Transportation market is usually in disequilibrium state．Based OI1 the macroeonomics disequilibrium theory and pertinent research achievements，the idea of disequilibrium transportationplanning is proposed in this paper．In order to establish a basic theoretical framework，the existence of market disequilibrium is shown by analyzing the price and quantity regulation mechanism．The unified model of market equilibrium and disequilibrium is introd uced by virtue of variational inequality．In this paper，the concept of disequilibrium degree is also posed．and the method for disequilibrium traffic demand forecasting is proposed by incorporating the disequilibrium degree．Finally，the price—quantity regulation printiple of macroeeonomics disequilibrium theory is introduced into the user’S route choice behavior，a more general behavior principle is proposed as a result．