Provided is a tea leaves for extraction of a low-caffeine green tea beverage, which is not susceptible to folding or browning during storage, and which enables the extraction of a green tea beverage which can be enjoyed hot or cold. Specifically provided is a tea leaves for extraction of a green tea beverage having a caffeine content with respect to the total mass of the dried leaves that falls within the range of 0.2 to 2.5 mass %, and the relation between the ratio of the mass content of theanine to the entire mass of dried leaves X (%) and the mass ratio of the content of monosaccharides to the fiber content Y satisfies the following condition (1). (1) −0.007X+0.024≦Y≦−0.011X+0.039
