A method for producing a safety paper, comprising the steps of: forming a first paper web with a security strip having a width of more than 2 mm and being embedded into this web during the molding thereof on a first wire-mesh cylinder, wherein the security strip is introduced into a pulp in such a way that, prior to contact thereof with the cylinder, a fibrous layer is molded, except for areas on a cylinder surface where the fibrous layer is not formed for lack of filtering property, wherein said areas devoid of filtering property on the cylinder surface are created by covering the wire mesh with a filigree paper or by pouring the wire mesh with a waterproof material or by making through holes in the wire mesh, wherein the security strip is positioned on the first wire-mesh cylinder in such a way that a part of the surface thereof coincides with areas on a cylinder surface where the fibrous layer is not formed, and free access zones are formed as windows on a paper wire side, wherein the security strip is completely or partially exposed at a side opposite to a wire side, thereby through windows are formed at locations where the windows on the wire side and the complete or partial outs of the security strip on the opposite side of paper coincide, the method being characterized in that a second paper web simultaneously with the formation of the first paper web with the security strip is formed on a second wire-mesh cylinder, the second paper web being made with continuous or periodical gaps having predetermined positions over the web and predetermined shapes and sizes, and the second paper web being superposed to a side of the first paper web opposite to the wire side, wherein the paper webs (1, 12) are connected in such a way that the gaps in the second paper web are coincident with outs of the security strip of the first paper web and that said through windows are formed as zones for free accessing the strip simultaneously from two sides of the safety paper. forming a first paper web with a security strip having a width of more than 2 mm and being embedded into this web during the molding thereof on a first wire-mesh cylinder, wherein the security strip is introduced into a pulp in such a way that, prior to contact thereof with the cylinder, a fibrous layer is molded, except for areas on a cylinder surface where the fibrous layer is not formed for lack of filtering property, wherein said areas devoid of filtering property on the cylinder surface are created by covering the wire mesh with a filigree paper or by pouring the wire mesh with a waterproof material or by making through holes in the wire mesh, wherein the security strip is positioned on the first wire-mesh cylinder in such a way that a part of the surface thereof coincides with areas on a cylinder surface where the fibrous layer is not formed, and free access zones are formed as windows on a paper wire side, wherein the security strip is completely or partially exposed at a side opposite to a wire side, thereby through windows are formed at locations where the windows on the wire side and the complete or partial outs of the security strip on the opposite side of paper coincide, the method being characterized in that a second paper web simultaneously with the formation of the first paper web with the security strip is formed on a second wire-mesh cylinder, the second paper web being made with continuous or periodical gaps having predetermined positions over the web and predetermined shapes and sizes, and the second paper web being superposed to a side of the first paper web opposite to the wire side, wherein the paper webs (1, 12) are connected in such a way that the gaps in the second paper web are coincident with outs of the security strip of the first paper web and that said through windows are formed as zones for free accessing the strip simultaneously from two sides of the safety paper.