Taking into account the lack of science-reasonable data about average number of days of bed capacity in year and average number of days of various patient treatment in the hospital, the attempt is undertaken to substantiate these parameters in reference to DM of RF central military medicine institutions. In result of lead research it was established, that average terms of bed capacity in central military hospitals during the last 5 years were 310 days. Average patient terms of treatment differ essentially depending on age and contingent, that is necessary to take into account to define hospital bed requirement norms.