PROBLEM TO BE SOLVED: To provide a sheet only for insect investigation for taking countermeasures against the generation and intrusion of insects, and to provide a machine for insect investigation. SOLUTION: This sheet only for insect investigation, whose catching surface is covered with a transparent filmy sheet. The transparent filmy sheet only for insect investigation can easily be hooked, and when the sheet is detached, the filmy sheet is adhered to the catching surface to facilitate the storage and identification of the sheet.