Abstract: The clone seeds of Chuyeqi were induced by N+ implantation, and an Early-sprouting ,Cold-resistance and Quality improved tea cultivar “Chanong NO.1” has been selected by means of systematic selection and vegetative propagation. Based on the cultivar comparative test carried out in 1998—2003, “Chanong NO.1” sprouted very early in spring and the sprouting values were 0.39~0.96 higher than the control cultivar Wannong95, and 0.35~0.57 higher than Fuding -dabaicha .The content of tea chemic material was abundant in fresh leaves and the contents of tea polyphenols, caffeine, amino acids, polysaccharides and resoluble material were 28.22%, 4.81%, 1.51%, 1.55% and 44.82%. Moreover, their ratios were harmonious, resulted in its excellent quality of the made green tea especially in the aspects of aroma and taste. “Chanong NO.1” was strong in cold resistance, especially during the spring frost season. Thus a conclusion may be drawn that it is an effective way of breeding quality tea cultivar by N+ implantations.