[Objective] China is the country with the largest planting area of tea trees, and the spring sprouting time of tea trees is an im-portant factor affecting the economic benefit. The extra-early sprouting tea trees in spring is the best material for making fa-mous early spring green tea. Germplasm resources of extra-early sprouting tea plants in China are relatively scarce, breeding process is slow, and the germinating time is affected by many factors. In this paper, the characteristics of germplasm resources, the progress of cultivar cultivation and the mechanism of early bud were reviewed. [Reviews] We summarized the progress in the cultivation of extra-early sprouting tea trees, and summarized the early bud mechanism of extra-early sprouting tea trees by combining the changes of endogenous hormones (GA, ABA, etc.), genetic factors (DAM, SOC1, DELLA, ABF, PP2C, NF-YCs etc.) and external environmental signals (temperature, light, etc.). [Prospect] The summary and elaboration of germplasm re-sources、 the internal and external factors of the early bud occurrence and regulation mechanism of the extra-early sprouting tea cultivar can provide theoretical reference for promoting germplasm innovation of extra-early sprouting tea cultivar and tea garden management in early spring.