The invention relates to a soil insect collector which comprises a frame (1) and a nylon mesh enclosure (2) coated on the frame (1), wherein a large tray (5) is arranged at one side of the frame(1), the lower end of the large tray (5) is fixed by two support rods (4), and the upper end of the large tray (5) is fixed by fixed sheets (11); one end of an elbow pipe (6) penetrates through the nylon mesh enclosure (2) and the large tray (5), is in threaded connection with an interface (8) and is fixed on the large tray (5), and the other end of the elbow pipe (6) is in the threaded connection witha collecting bottle (7). The invention has simple manufacture, low cost and portability, is convenient to use, can be dismounted and folded for package so as to have small size, is portable for use in fields or required places, is convenient to mount and use and is suitable for the specimen collection of soil insects, the observational study of the biology and the ethology, and the like.