Without fertilizers and pesticides, it is one of the goals of modern organic agriculture. Through years of practical experience, the author has found a way to make natural organic fertilizers from raw materials. Raw natural red soil 1500 kg. Straw, straw, garbage 150 kg. Human urine or pig, chicken, duck dung. Prepare 1500 kg of natural red soil, mash it, take 150 kg of straw or wheat, sorghum, corn straw, mountain grass or flammable waste. The ratio is 10:1. Burn red brown with grass or garbage. After mixing the burned red soil with the ash, move it into the room and pour on the excrement of human or pig, chicken and duck droppings while moving. After every two days, two human urine excrements were poured and piled into a pile after turning. After 75 days of continuous use, it can be used for another 15 days. After 90 days of tanning fermentation, the brown soil became dark brown with microbial decomposition. The nitrogen content was 5.6%, the phosphorus pentoxide content was 1.3%, and the potassium oxide content was 1.8%. pH 7.5, and relatively loose, basically no odor. In this way, the organic fertilizer is successfully tanned and can be applied. Why should we use red soil? Do not dig the soil on the field tillage layer to avoid damaging the cultivated land. The second is that red soil is rich in acid, free of diseased bacteria, insect eggs, and other substances that do not dissolve in water. Burned red soil becomes a symbiotic carrier of NPK fertilizer. In addition, why do you need to move the incinerated red soil dirt into the room, because you can artificially control the temperature and humidity, which is conducive to the fermentation of natural organic fertilizer. Organic fertilizers produce high heat (40°C~75°C) during the decomposition process. They can kill diseased bacteria, insect eggs, etc., and then slowly decompose into semi-ripening fertilizers at appropriate temperatures (40°C~50°C), and can be cultivated when decomposed. A large number of beneficial microorganisms are conducive to plant absorption. In short, the use of abundant natural resources in rural areas for the production of natural organic fertilizers has the advantages of easy material extraction, simple operation, low cost and no pollution, and is beneficial to the restoration of the original ecological balance of nature. The development prospect is very broad.