The biophysical diagnostic methods are an unusual element of evaluation of the fetus state in the time of pregnancy and delivery. Nowadays, the applied methods of fetus supervision during labor don't ensure the permanent analysis and they don't deliver diagnostic information about fetus hypoxia. The purpose of avoiding the risk of fetus injury and its hypoxia should be developed by technologies which allow making a diagnosis of fetus condition and to detection of intralabor hypoxia, So, especially all new methods are indicated, which make easier the diagnostic in a permanent mode and which allow for hypoxia expectation and they also allow to reduce the number of unjustified medical interference. One of these methods is fetus electrocardiography.