The present invention relates to a novel plasma preparation applied for crop plant quality improving and the preparation method thereof. The novel plasma preparation comprises a plasma stock solution, a plant trace element nutrient solution and a dispersant, wherein the volume ratio of the plasma stock solution, the plant trace element nutrient solution and the dispersant is 100: 50-2000: 2-30, and the plasma stock solution is a vegetable oil of a plasma concentration of up to 5mg/g-60mg/g. The novel plasma preparation of the present invention has simple application and can be used for spraying and root irrigation, and the powder can be applied to seed dressing and soil applying； the novel plasma preparation can improve the quality, and has a quick effect after applying, and the improvement of quality is obvious； and furthermore the application cost is low, and the controllability of the effect after applying is good. The preparation by using the method of the present invention is convenient, has a high efficiency, needs no large-scale chemical processing equipment, and does not generate the three main wastes in the production process； and the production raw material, the production process and the decomposition products all have no harm to human body, the environment and the crop plants.La présente invention concerne une nouvelle préparation de plasma appliquée pour améliorer la qualité de plantes cultivées et son procédé de préparation. La nouvelle préparation de plasma comprend une solution mère de plasma, une solution nutritive d'oligo-éléments pour plante et un dispersant, le rapport de volume de la solution mère de plasma, de la solution nutritive d'oligo-éléments pour plante et du dispersant étant de 100:50-2000:2-30, et la solution mère de plasma est une huile végétale ayant une concentration de plasma allant jusqu'à 5 mg/g à 60 mg/g. La nouvelle préparation de plasma de la présente invention a une application simple et peut être utilisée pour la pulvérisati
