NOVELTY - A seed dressing agent includes 5-10 pts. wt. pepper, 25-30 pts. wt. ginkgo skin, 25-30 pts. wt. common cnidium fruit, 26-30 pts. wt. cortex meliae, 35-45 pts. wt. diammonium phosphate, 20-30 pts. wt. potassium chloride, 25-30 pts. wt. medical stone powder, 20-25 pts. wt. bentonite, 10-20 pts. wt. diatomaceous earth, 10-20 pts. wt. powdered rock phosphate, 5-15 pts. wt. humic acid sodium, 10-25 pts. wt. proline, 15-20 pts. wt. methionine, 16-23 pts. wt. glycine, 26-33 pts. wt. threonine, and 10-20 pts. wt. water.    USE - A seed dressing agent used for cereal, fruit tree, and vegetable such as potato (claimed).    ADVANTAGE - The seed dressing agent has good weeding effect, and is environment-friendly.    DETAILED DESCRIPTION - A seed dressing agent comprises 1-15 pts. wt. Stellera chamaejasme, 5-10 pts. wt. pepper, 25-30 pts. wt. ginkgo skin, 25-30 pts. wt. common cnidium fruit, 26-30 pts. wt. cortex meliae, 17-30 pts. wt. Quisqualis, 16-25 pts. wt. Chinese gall, 1-15 pts. wt. Ilex pubescens, 5-15 pts. wt. radix sophorae flavescentis, 5-10 pts. wt. soapberry peel, 55-60 pts. wt. Cassia mimosoides var nomame, 5-10 pts. wt. baical skullcap root, 10-15 pts. wt. tea saponin, 5-10 pts. wt. ammonium bicarbonate, 35-45 pts. wt. diammonium phosphate, 20-30 pts. wt. potassium chloride, 5-10 pts. wt. zinc sulfate, 1-2 pts. wt. boric acid, 5-10 pts. wt. manganese sulfate, 25-30 pts. wt. medical stone powder, 5-10 pts. wt. calcium powder, 20-25 pts. wt. bentonite, 5-15 pts. wt. thiourea, 10-20 pts. wt. diatomaceous earth, 10-20 pts. wt. powdered rock phosphate, 5-15 pts. wt. humic acid sodium, 10-25 pts. wt. proline, 15-20 pts. wt. methionine, 16-23 pts. wt. glycine, 26-33 pts. wt. threonine, 5-15 pts. wt. tyrosine, and 10-20 pts. wt. water. An INDEPENDENT CLAIM is included for preparing the seed dressing agent, comprising adding 30 times of 70% ethanol to S. chamaejasme, pepper, ginkgo skin, common cnidium fruit, cortex meliae, Quisqualis, Chinese gall, I. pubescens, radix sophorae flavescentis, soapberry peel, C. mimosoides var nomame, and baical skullcap root; refluxing twice, each time for 3 hours; combining the extract at 60 degrees C, and decompressing and concentrating the filtrate at 0.08 MPa and 65 degrees C to obtain a relative density of 1.6; spray drying to obtain a dry extract powder, and dispersing in distilled water; and adding tea saponin, ammonium bicarbonate, diammonium phosphate, potassium chloride, zinc sulfate, boric acid, manganese sulfate, medical stone powder, calcium powder, bentonite, thiourea, diatomaceous earth, powdered rock phosphate, humic acid sodium, proline, methionine, glycine, threonine, tyrosine, and water.