Abstract: The paper aims to study the effect of sowing date on seedling growth characteristics and accumulated temperature (AT) (≥0℃) of springness wheat ‘Guangmingmai 1’. The results showed that the emergence rate was declined, and AT (≥0℃) reduced along with the sowing date delayed; leaf age, tiller number, LAI and dry matter accumulation significantly decreased along with the sowing date delayed. There was an exponential correlation between the average daily temperature (ADT) and the days from sowing to seedling emergence. AT (≥0℃) from sowing date to before-wintering stage had significantly positive linear correlation with growing days, leaf age, tiller number, LAI and dry matter accumulation from seeding date to before-winter stage. Under this experimental condition, with sowing date delayed six days or so, some characteristics were changed from sowing to seedling stage, for example, ADT was decreased 1.0-2.5℃, and AT (≥0℃) was increased 5-15℃, emergence time was extended 2-5 days, and emergence rate was declined 1.5%-3.5%. To achieve robust seedlings of springness wheat, the suitable AT (≥0℃) and sowing date were 500-670℃ and from October 23th to November 4th under this experimental condition, and the optimum sowing date was October 27th-29th.