A regularity of outbreak observation box for the pests in tobacco warehouse is characterized in that the observation box comprises a box body which is provided with a head cover and the box body is separated into a culture chamber and an observation chamber by a mesh sieve; a lighting system is arranged in the observation chamber and the walls of the observation chamber are made of transparent materials. The observation box can be used for observing and recording the Lasioderma serricorne states of different growth stages in the tobacco warehouse and judging the opportunity for using pesticide and fumigating to kill Lasioderma serricorne at right time according to the growth condition of Lasioderma serricorne. The invention can be used for observing Lasioderma serricorne growth conditions for a plurality of times and can not cause propagation of Lasioderma serricorne in the tobacco warehouse. The observation box has reasonable design and simple structure and can be widely used for investigating Lasioderma serricorne in different growth stages in the tobacco warehouse; therefore, the invention has significance to guide people to select the opportunity for fumigating and killing Lasioderma serricorne in the tobacco warehouse.