The invention discloses a device for detecting the size and weight of storage goods. The device includes a lighting unit, a triggering unit, an image acquisition unit, an image processing unit, a weighing unit, a controller, a memory, a display and a wireless transmission unit; the lighting unit provides a good light source which is conductive to obtaining sharp-contrast images; when a forklift enters the field of view of the image acquisition unit, the triggering unit sends triggering signals, the image acquisition unit acquires images, and the image processing unit processes the images so as to calculate the size of the goods, and the size of the goods is displayed on the display; the weighing unit obtains weight information; the size of the goods and the weight information are transmitted to the controller; and the size of the goods and the weight information are transmitted to a warehouse management system through the wireless transmission unit. With the device of the invention adopted, the realization of pre-allocation of goods positions and pre-judgment on standard-exceeding goods can be facilitated, and therefore, the utilization rate of the goods positions and the efficiency of loading and unloading can be improved.