Flax is one of the most valuable technical and oilseed crops, the importance of which is still very great in the world. Russia has been the world's main producer of flax for many centuries. The problem of reviving the production, processing of flax and increasing its yield in the Russian Federation is particularly relevant at the present time, since flax is becoming the main raw material source for the powder industry and special chemicals instead of imported cotton. It is known that after moistening flax seeds during their pre-sowing treatment, mucus is released, and the seeds stick together, which complicates and slows down the process of pre-sowing preparation of seed material. A new scientific and methodological approach to the ecological treatment of flax seeds is based on the creation of a prescription environmentally friendly composition consisting of a natural stimulator of plant growth and development and a polymer forming a biodegradable polymer film of natural origin on seeds that does not let mucus out and thereby prevents seeds from sticking together after processing. An environmentally friendly aqueous solution of hydrogen peroxide of natural concentration from 2.94×10-6 to 82.00×10-6 M was used as a stimulant for the growth and development of flax, which at the same time was a solvent for the natural biodegradable polymer inulin, which is D-fructose, highly soluble in water; the concentration of inulin was in the range of 1.5-2.5%. In the experiments, flax seeds of the Universal variety of the 2020 harvest were used. Semi-dry treatment of seeds was carried out, then they were dried until completely dry and the formation of a loose state. The best result was obtained after processing flax seeds with a composition consisting of an environmentally friendly aqueous solution of hydrogen peroxide with a concentration of 5×10-6 M and 2% inulin solution, namely: there was no seed sticking, and seed germination increased by 30% compared to the control.