Abstract: The number of taproots, girth diameter, base plate diameter and weight of the bulbs were measured, and SPSS and graphics software were used to analyze the relevant data; the flowering indicators of potted seedlings were recorded. The results showed that, through the methods of correlation analysis, principal component analysis, cluster analysis, etc., the seed bulbs were preliminarily divided into five grades: the first-grade balls, with a circumference more than 16 cm; the second-grade balls, with a circumference of 14-16 cm; the third-grade balls. Balls, with a circumference of 12-13.9 cm; Grade-4 balls, with a circumference of 10-11.9 cm; Grade-5 balls, with a circumference of 8-9.9 cm; different grades of balls had differences in appearance and shape in terms of circumference, base, and weight. The bulbs of all grades had the characteristics of dividing the bulbs, and the bulbs were divided by side. It had different effects on flowering rate, seed setting rate, scape length and flower diameter, and was positively correlated with seed bulb circumference. The grading standards obtained from the research were scientific and reasonable, and could be used in actual production. When used for the planting of economic forest flowers under the forest, we could try to choose the first and second seed bulbs to maximize the benefits and the best landscape of the under forest economic forest medicine + forest flower planting model.