The invention relates to an adult bee collecting method of aphidius gifuensis bred in an arch shed. According to the method, an insect prevention net (5) is integrally covered outside a shed frame of the arch shed, a shade net (6) is covered at the arch top of the arch shed, the top of the phototropic surface of the arc shed is provided with at least one bee collecting hole (8), a detachable bee collecting bag (2) is connected outside the bee collecting hole, the negative geotropism and the phototaxis of the aphidius gifuensis are utilized, adult bees of the aphidius gifuensis bred and survived in the arch shed are collected into the bee collecting bag (2). The adult bee collecting method has the characteristics that the characteristic of aphidius gifuensis bred in a small shed is combined, the negative geotropism, the phototaxis habit and the activity peak time of the aphidius gifuensis are utilized, the bee collecting bag is used for collecting adult bees for releasing in fields, the dying of adult bees in the shed before field loose keeping is prevented, and the adult bees are effectively utilized.