The metal detector for packaging industry is used to detect various metal impurities such as metal chips, broken needles, iron wire, lead, copper, aluminum, tin, stainless steel, etc. that are mixed or lost in raw materials or products. It is highly intelligent. The special design of the digital conveyor belt metal detector structure can effectively avoid interference from external factors such as vibration, noise and product effects. The conveyor can provide a belt conveyor or a modular chain conveyor, and the detection head can also be directly installed on the inclined chute for detection.