The effect of nutrient block seedling raising is better, and the cost is about 50% more expensive than that of plug seedling raising. From the cost point of view, it depends on the kind of seedlings raised. If it is a more expensive vegetable, it is still very cost-effective. As far as infinite growth tomato is concerned, it can mature 5- 10 days earlier than conventional seedling raising, and increase the yield by about 15%. Judging from the input-output ratio, the cost of nutrient block seedling raising is higher than that of plug seedling raising, but the effect is basically the same.