On the basis of electronegativity expressed in density functional theory and electronegativity equalization principle,the Modified Electronegativity Method(MEEM) has been developed,which allows the direct computations of the atomic charges and total energies in various molecules.As application,the three macrocyclic molecules 18-crown-6,24-crown-8 and 24-cryptand are calculated and quite good results of atomic charges and total energies are obtained as compared with those from the ab initio STO-3G SCF calcul...