The invention relates to a pest capturing device, in particular to a portable pest capturing device which is combined with a main working cabin and a pest-storing net cabin, etc., which are made from materials such as PVC and arranged with matching negative pressure suction. The device is used for capturing flies, mosquitoes, deerflies and cabbage caterpillars. The device can replace
toxic chemical spraying agent such as
dichlorvos and
dimethoate for killing pests and is applicable to families in urban or suburban areas, guesthouses, restaurants, hotels, hostels, eateries, offices, airplanes, trains, vehicles, ships, dormitories, farms, urban and suburban refuse dumps,
environmental hygiene organizations and farmlands all over the world for protecting vegetables, fruits and foodstuff from being contaminated by
pesticide residues; the device can effectively capture the pests that harm human beings by spreading
cholera, typhoid and destroy farm plants with a speed of capturing 80 to 300 pests per minute, and then distributes the living pests without the chemical
contamination of the pesticides to
livestock farms for breeding chickens, ducks and fishes as
high protein feedstuff so as to realize the aim of stopping general environment
pollution, turning harm to benefit and protecting the health of human beings.