NOVELTY - Preparing abamectin dregs fertilizer comprises: (a) uniformly mixing 100-110 pts.wt. of cow dropping, 5-10 pts.wt. of slag, 3-7 pts.wt. of maize straw, 24-26 pts.wt. of ammonium bicarbonate, 15-17 pts.wt. of calcium superphosphate, and 7.2-7.8 pts.wt. of potassium sulfate; subjecting to compost fermentation; (b) spreading out abamectin and drying; and (c) uniformly mixing 40-60 pts.wt. of cow dropping, 30-45 pts.wt. of dregs of abamectin, 5-10 pts.wt. of humic acid, and 4-10 pts.wt. of argil, and preparing to particles with size of 2.5-4.5 mm to obtain the fertilizer of dregs of abamectin.    USE - The process is useful for preparing abamectin dregs fertilizer (claimed).    ADVANTAGE - The process can reduce the content of inorganic nitrogen, phosphorus, and potassium; and can improve the content of total nitrogen, total phosphorus, and total potassium; thus, the prepared fertilizer has high content in total nitrogen, total phosphorus, total potassium, and organic matter.    DETAILED DESCRIPTION - Preparing abamectin dregs fertilizer comprises: (a) uniformly mixing 100-110 pts.wt. of cow dropping, 5-10 pts.wt. of slag, 3-7 pts.wt. of maize straw, 24-26 pts.wt. of ammonium bicarbonate, 15-17 pts.wt. of calcium superphosphate, and 7.2-7.8 pts.wt. of potassium sulfate; subjecting to compost fermentation, and turning that for every three days; where fermentation is for 30-33 days; and obtaining cow dropping where inorganic nutrients are fixed by microorganism; (b) spreading out abamectin with a thickness of 15-25 cm, drying at 22-28 degrees C, detecting water content of dregs of the abamectin for every 2-3 hours, and continuously drying until the water content of the dregs of abamectin is 40-55%; and (c) uniformly mixing 40-60 pts.wt. of cow dropping where inorganic nutrients are fixed by microorganism, 30-45 pts.wt. of dregs of abamectin, 5-10 pts.wt. of humic acid, and 4-10 pts.wt. of argil, and preparing to particles with size of 2.5-4.5 mm to obtain the fertilizer of dregs of abamectin.