A method for producing prestressed concrete construction elements, especially concrete railway sleepers by using a mould bed which accommodates reinforcing bars, wherein a plurality of moulds are arranged successively in a line and the reinforcing bars are entered and tensioned over the entire length of the line, and the moulds are filled with concrete, wherein further the moulds are formed in groups of moulds and comprise lateral closure parts, wherein demoulding occurs at one end of the mould bed, wherein - a group of moulds contains several moulds which are arranged transversely to the line, wherein each group of moulds is movably formed and wheelsets for movability on rails are formed on each group of moulds; - distances thus remain between the groups of moulds, wherein the separation of the respective mould from the strand occurs after the hardening of the concrete; - after the separation of the first group of moulds said movably formed group of moulds is removed from the stressing bed and is transferred by means of the wheelsets and a rail arrangement to a location for stripping and for the central treatment of the mould; - the respective group of moulds is cleaned after stripping and is prepared for renewed use, wherein said steps are carried out spatially in the region of the location for central treatment of the moulds, wherein concrete residues are obtained centrally; - the respectively cleaned movable groups of moulds are assembled into a new line on a track system until the entire length of the line is filled and is ready for introducing the concrete reinforcement and for stressing the reinforcing bar; - an advancing movement of the remaining strand of groups of moulds to the separating station occurs in order to separate, strip and clean the following groups of moulds, wherein the lifting and transport means for filling the groups of moulds and moulds with fresh concrete and the transport means for the transport of the empty moulds are provided in different planes for the simultaneous use which does not obstruct each other, and - the application of mould-release agents occurs in the region of the location for the central treatment of moulds after the cleaning of the moulds, wherein the mould-release agent is introduced in an encapsulated station into the moulds for preventing the application of mould-release agents within the production device, and - several lines with a plurality of moulds are longitudinally arranged adjacent to each other without intermediate space for product storage. - a group of moulds contains several moulds which are arranged transversely to the line, wherein each group of moulds is movably formed and wheelsets for movability on rails are formed on each group of moulds; - distances thus remain between the groups of moulds, wherein the separation of the respective mould from the strand occurs after the hardening of the concrete; - after the separation of the first group of moulds said movably formed group of moulds is removed from the stressing bed and is transferred by means of the wheelsets and a rail arrangement to a location for stripping and for the central treatment of the mould; - the respective group of moulds is cleaned after stripping and is prepared for renewed use, wherein said steps are carried out spatially in the region of the location for central treatment of the moulds, wherein concrete residues are obtained centrally; - the respectively cleaned movable groups of moulds are assembled into a new line on a track system until the entire length of the line is filled and is ready for introducing the concrete reinforcement and for stressing the reinforcing bar; - an advancing movement of the remaining strand of groups of moulds to the separating station occurs in order to separate, strip and clean the following groups of moulds, wherein the lifting and transport means for filling the groups of moulds and moulds with fresh concrete and the transport means for the transport of the empty moulds are provided in different planes for the simultaneous use which does not obstruct each other, and - the application of mould-release agents occurs in the region of the location for the central treatment of moulds after the cleaning of the moulds, wherein the mould-release agent is introduced in an encapsulated station into the moulds for preventing the application of mould-release agents within the production device, and - several lines with a plurality of moulds are longitudinally arranged adjacent to each other without intermediate space for product storage.