Taking safflower vegetable '3-10' strain as material,the influence of harvest time(35,40,45,50 d) on the yield and flavonoids and vitamin C content of safflower vegetable were studied,in order to determining the best harvest time of safflower seedlings.The results showed that the net weight of harvest time 50 d was the highest,there were obvious differences of net weight between harvest time 50 d and 35 d.No difference was found among the harvest time 40,45,50 d.The flavonoids content reached the highest level in harvest time 50 d.Differences among harvest time 50,40,45 d were not obvious,but significant differences did exist between harvest time 35 d and 40,45,50 d,respectively;but,the vitamin C content reached the highest level in harvest 45 d and was 22.43 mg/100g.According toguaranteeing output and improving the nutrient content,it was concluded that harvest time 40~45 d was more suitable.