NOVELTY - Tea composite fertilizer comprises 40-50 pts. wt. urea, 1-2 pts. wt. attapulgite, 10-20 pts. wt. ammonium chloride, 1-2 pts. wt. lime, 10-14 pts. wt. ammonium bicarbonate, 6-10 pts. wt. potassium dihydrogen phosphate, 20-30 pts. wt. bone char, 0.5-1.0 pts. wt. selenium yeast, and 2-4 pts. wt. auxiliary agent. The auxiliary agent comprises 15-20 pts. wt. sweet potato starch, 4-6 pts. wt. grass peat, 1-2 pts. wt. sodium carboxymethyl cellulose, 1-2 pts. wt. aluminum hydroxide powder, 3-5 pts. wt. sodium silicate, 2-3 pts. wt. chitosan, and balance water.    USE - Tea composite fertilizer.    ADVANTAGE - The composite fertilizer promotes soil moisture and plant growth, promotes and improves tea quality and tea yield, and improves selenium content in tea.    DETAILED DESCRIPTION - Tea composite fertilizer comprises 40-50 pts. wt. urea, 1-2 pts. wt. attapulgite, 10-20 pts. wt. ammonium chloride, 1-2 pts. wt. lime, 10-14 pts. wt. ammonium bicarbonate, 6-10 pts. wt. potassium dihydrogen phosphate, 20-30 pts. wt. bone char, 0.5-1.0 pts. wt. selenium yeast, and 2-4 pts. wt. auxiliary agent. The auxiliary agent comprises 15-20 pts. wt. sweet potato starch, 4-6 pts. wt. grass peat, 1-2 pts. wt. sodium carboxymethyl cellulose, 1-2 pts. wt. aluminum hydroxide powder, 3-5 pts. wt. sodium silicate, 2-3 pts. wt. chitosan, and balance water. It is prepared by adding sweet potato starch with 2-3 times amount water; heating at 30-34 degrees C for 4-6 minutes while stirring; adding chitosan and grass peat; stirring at 60-100 revolutions per minute; dispersing for 3-5 minutes; adding aluminum hydroxide powder and sodium silicate; uniformly stirring to obtain slurry; adding sodium carboxymethyl cellulose with 3-4 times amount water; uniformly stirring; adding into slurry; and heating at 50-55 degrees C for 1.6-2 hours while stirring to water dryness to obtain auxiliary agent. An INDEPENDENT CLAIM is included for preparation of tea composite fertilizer by mixing and stirring bone charcoal and attapulgite according to proportion at 100-160 degrees C for 4-10 minutes; adding remaining components, additives and selenium yeast; uniformly stirring at normal temperature; further stirring at 50-60 degrees C; and granulating and drying mixture at 65-75 degrees C to obtain composite fertilizer.