The invention discloses an insect catching device which comprises an insect trapping lamp, a first transparent lampshade covering the outer side of the insect trapping lamp, a transparent second lampshade covering the outer side of the first lampshade, a first driving device for driving the first lampshade to rotate, an insect storage piece for collecting insects, and a scraper blade for scrapping the insects into the insect storage piece, wherein at least two separators are arranged on the peripheral wall of the first lampshade around the circumferential direction; a compartment is formed between every two adjacent separators; a first opening through which the insects fly in and a second opening through which the insects fly out are formed in the second lampshade; the first driving device is connected to a central shaft of the first lampshade; a connection opening correspondingly communicated with the second opening is formed in the insect storage piece; the scraper blade is arranged at the connection opening or the second opening. According to the insect catching device, the insect trapping lamp does not need to be cleaned by a worker, so that the problem of waste of time and labor for cleaning of the insect catching device is solved; the insect catching device is convenient to clean, reliable in performance and convenient to use, and can supply an effective technology support to agricultural development.