Abstract: To probe proper time of transplanting and curing and have preliminary realization of good growing weather for sun-cured tobacco, some different transplanting time were arranged. By comparing growth and development, yield and quality of plants with different transplanting time, showed the result that difference transplanting time had an effect on rate of growth, growing season, yield, output value and internal chemical contents as well as aroma quality. Through adjustment of transplanting time, the plants would be able to develop in good growing weather and the characteristics of this kind of tobacco could reveal in full power, thus a healthy objective condition for producing high quality of sun-cured tobacco was created. A viewpoint was made through the experiment that the selection of the first ten days of November transplanting time in natural climate of Lujiang in Baoshan, Yunnan province, would have plants a fitting growth duration after transplanting, a relatively concentrated maturity period benefited for curing, and higher yield and output value as well as aroma quality