The opportunities of combined action of weak constant and low frequency alternating magnetic fields on decreases of an edema and swelling of cells of a tissue of a brain in an acute craniocerebral injury are surveyed. New concept of the description of water-electrolyte exchange in cell a head brain is developed. With growth of number amino acids-crystalhydrates (AAC) on lesion a site of brain tissue decreases of permeability of a cell membrane and a cell metabolism. The external influence of vibron oscillations of AAC stimulates of a cell tissue dehydration of head brain.