Smoke density testing device

The utility model relates to the technical field of detection equipment, and in particular relates to a smoke density testing device. The smoke density testing device comprises a box body, wherein a grid frame is arranged in the box body; a sample is placed on the grid frame. The smoke density testing device is characterized in that a fixing device which is used for preventing the sample from moving is pressed against the sample; a laser is arranged above the sample; a flame temperature sensor is arranged on the lower part of the grid frame. The smoke density testing device has the beneficial effects that the fixing device is lightly pressed against the sample to prevent the sample from moving; the laser is arranged on the upper part in the box body, and a laser beam is emitted to the grid frame and is used for positioning the sample; the flame temperature sensor is arranged, on the lower part of the grid frame, below the sample and is used for determining the flame temperature. The smoke density testing devi