Fried green tea is named after the drying method of green tea is frying. According to the shape, it can be divided into three categories: long fried green, round fried green and flat fried green. Long fried green eyebrows, also known as eyebrow tea. Round fried green looks like particles, also known as pearl tea. Flat fried green is also called flat tea. The quality of stir-fried green is characterized by tight strips, moist color, high and lasting aroma, rich flavor, soup color and Huang Liang leaves. Stir-fried green has the quality characteristics of round and compact appearance, high fragrance and strong taste, and foam resistance. Flat fried green products are flat, smooth, fragrant and mellow, such as West Lake Longjing. When evaluating the quality of plum tea in trade, the legal standard samples of tea are often taken as reference, and generally three grades are used for grading and pricing.