The small green leafhopper is one of the main pests on the tea tree in our county. The conditions are suitable to cause serious harm from time to time, even without tea. It is based on adults, nymphs suck tea shoots tea shoots, so that the leaves of the leaves become yellow and dry coke, red veins, stagnation and hardening, serious damage caused by the leaves off, harmed buds tea making fragile, astringent, Poor quality. I. Features and habits Tea green leafhopper adults 3-4 mm long, green or yellow-green, slightly triangular head, compound eyes gray-brown; egg: crescent, about 0.8 mm long, early milky white, after turning to light Green; nymphs pale green to yellowish, with large heads and thin rear ends. In my county about 13 generations a year, there is no overwintering phenomenon, activities in the young leaves on the lower part of the tea bush, afraid of the sun, and more hiding in the back of the leaf damage, the eggs scattered in the young shoot tissue, about 80% of the eggs produced in Within one bud and two leaves, it is most prone to disasters under the weather conditions when the weather is fine, and it is unfavorable to the development under rainy or dry conditions, and the amount of occurrence is small. Tea gardens that are unreasonable in intercropping are most vulnerable to damage. Second, the prevention and control methods 1, agricultural control and physical control (1), a number of times in a timely manner, reduce the population density; (2) timely weeding, reduce the source of insects; (3), the use of yellow armyworm board (paper) trapping. 2. Biological control Protection and utilization of natural enemies, protection of natural enemies of tea gardens or natural enemies for artificial breeding, and full use of natural enemies to control their populations. 3, chemical control. Different tea gardens use different pesticides (including biological pesticides and chemical pesticides) to prevent and control: use 2.5% rotenone 300 to 500 times or 100 insects freeze 600 to 800 times or love 禾 0.3% azalea EC 300 to 500 times or 0.3% matrine aqueous solution 1000 times or 35% Sadan 1000 times or 2.5% bifenthrin EC 1500-2000 times solution or 10% imidacloprid 4000-5000 times solution spray control.