Smoke generating device

The utility model provides a smoke generating device, and relates to the field of smoke detection. The smoke generating device comprises a liquid storage container, an atomizer, a first switch, a smoke storage container and a second switch. The liquid storage container is connected with the atomizer, the atomizer is connected with the smoke storage container through the first switch, and the smokestorage container is connected with the second switch. The liquid storage container is used for storing a smoke generation substrate; the atomizer is used for generating to-be-detected smoke according to the smoke generation substrate; the smoke storage container is used for receiving to-be-detected smoke flowing in from the first switch and increasing the concentration of the to-be-detected smoke to a preset concentration; and the second switch is used for discharging the to-be-detected smoke stored to the preset concentration. By using the smoke generating device, the safety of the maintenance process of the smoke