A field trial was carried out to study the influence of different sowing date on Chinese milk vetch growth, fresh yield and nutrient accumulation. The results showed that the shoot height, compound leaves per plant, apparent leaf area, weight per plant decreased as the sowing date postponed. Fresh yield decreased prominently as the sowing date postponed, sowing date at 25th September could get the highest yield, reached to 31 833 kg/hm2. Sowing date at 2nd October could get the highest seed yield 227 kg/hm2. N, P, K and Cu contents of the shoot decreased as the sowing date postponed, but Fe and Mn contents increased when the sowing date later than 30th October, while there was no difference among the treatments with the Ca, Mg and Zn contents. The nutrient accumulation decreased as the sowing date postponed. The study showed that sowing date had great effect on Chinese milk vetch, the last ten-days period of September and the first ten-days period of October was the best sowing date under this condition of experiment.