METHOD OF PREPARATION Having applied this method, the authors obtained irregular and halogen-steroids of the Erengan series with valuable properties. The proposed method for obtaining the halo-15 steroids of the pregan series of the formula I = 2t L • Where Z is two aliphatic, aromatic or araliphatic hydrocarbon residues, or group ~ .C == Z— cycloalkylideic / / group and X is a fluorine or chlorine atom, consists in the fact that in the compound of formula II there are 'dH.FCHoF20, where RI and Rj are each free or etherified: 1 - or to the ether of oxygram or Ri together with R2 - group 2530 where RI and R2 have the indicated values epoxide ring cleaved action halo- geivodoroda HX, wherein X has the abovementioned meaning, or using an agent-releasing this galogeivodorod and the resulting halogen- gndrin simultaneously or sequentially dehydrated by treatment with hydrogen knslotoy halogen.