Armyworm cultivating device and application method thereof

The invention discloses an armyworm cultivating device and an application method thereof. The armyworm cultivating device comprises a support board (10) and a screen (20). The support board is provided with feces dropping holes (11) in an array, a guide funnel (30) used for guiding feces of armyworms to drop is disposed under the support board (10), a collecting bag (40) is disposed under the guiding funnel (30), and an armyworm habitat structure is arranged over the support board (10). The screen (20) is arranged over the support board (10) and covers the armyworm habitat structure, pupa collecting boxes (15) used for collecting pupas of armyworms are detachably arranged on square holes in two ends of the support board (10). By adopting the armyworm cultivating device, feces of armyworms can be conveniently cleaned and removed during cultivation, armyworms can be conveniently manually selected, and the survival rate of the armyworms during cultivation can be raised at the same time.