Abstract: 【Objective】 To study the optimal armyworm plate and trap, as well as the optimal trap hanging density, so as to provide reference for the monitoring and prevention and control of peach small esophageal worm. 【Methods】 Using the sexual attractant of peach small heart worm combined with six different colors of sticky worm plates and three different types of traps, as well as setting three different hanging densities of traps, the trapping effect of peach small heart worm was compared. 【Results】 The experimental results showed that the trapping quantity of the white armyworm board was significantly higher than those of the other six colors of red, green, white, yellow, black and blue color armyworm boards. The daily amount of moth induced by triangle trap was (12.35±2.24), the daily amount of moth induced by barrel trap was (1.23±0.29), and the daily amount of moth induced by homemade water bottle trap was (0.63±0.12). There was a significant difference between triangle trap and barrel trap and homemade water bottle trap, but no difference between barrel trap and homemade water bottle trap. There were significant differences in the effects of traps with different hanging densities on the moths of P. peach. The average total moths attracted by 3 traps per mu was (13.36±2.11), the average total moths attracted by 6 traps per mu was (19.46±1.28), and the average total moths attracted by 9 traps per mu was (27.56±5.61). Treatment 3 (9 cells/667m²) was significantly different from treatment 1 (3 cells/667m²) and treatment 2 (6 cells/667m²). 【Conclusion】 The white armyworm plate and triangle trap have the best trapping effect on the adult and hanging 9 traps per mu can effectively control the number of adult Carposina sasakii.