The present invention discloses a large-scale and multi-span breeding greenhouse for adult black soldier flies, comprising greenhouse bodies. Each greenhouse body comprises a pupae room and a mating and oviposition room; a partition wall is provided between the pupae room and the mating and oviposition room, the partition wall is provided with a door hole communicating the pupae room and the mating and oviposition room; the pupae room is opaque; the greenhouse body further comprises a light guiding device which introduces sunlight into the mating and oviposition room. The present invention provides a suitable growth and breeding environment, ensures a high reproduction rate, and can achieve large-scale captive breeding of black soldier flies. The greenhouse has a high level of automation and can be easily cleaned and maintained. Little human interference takes place in the breeding process, no random oviposition is observed, and the egg collection rate is high.
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