The invention relates to the technical field of intelligent weighing equipment, and discloses a bar code weighing device based on internet of things data integration. The bar code weighing device comprises a weighing module, wherein the weighing module is internally provided with a weighing sensor, a weighing and early warning module, a pressure transmitter and a voltage transformer, the output end of the weighing module is electrically connected with a signal conditioning module, and the output end of the signal conditioning module is electrically connected with an AD signal conversion module. The wireless communication module and the network monitoring module are combined for use, so that remote monitoring is facilitated, debugging convenience is improved, the weighing and early warningunit is used for carrying out early warning on the quality of the weighed object, a data analysis unit and a buzzer are used in a matched mode, so that an overweight object can be pre-warned, damage to the bar code weighing device caused by overweight can be prevented, the service life of the bar code weighing device can be prolonged, a series of internet of things technology is utilized, so thatthe practicability is improved, and the creativity of the bar code weighing device is improved.